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A ball of mass 0.4 kg is initially at rest on the ground. It is kicked and leaves the kicker's foot with a speed of 5.0 m/s in a direction 60° above the horizontal. The magnitude of the impulse imparted by the ball to the foot is most nearly - ANSWER -2 N*s A force of constant magnitude F and fixed direction acts on an object of mass m that is initially at rest. If the force acts for a time interval ∆t over a displacement ∆x , what is the magnitude of the resultant change in the ...

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8 pages

Written in 2025/2026

Grade A+

MERCYTRISHIA

When you drop a ball, it accelerates downward at 9.8 m/s². If instead you throw it horizontally, then its acceleration immediately after leaving your hand, assuming no air resistance, is a. 9.8 m/s² b. more than 9.8 m/s² c. less than 9.8 m/s² d. Cannot say, unless the speed of throw is given - Answer A How many vectors shown in the figure (refer ch. 3 test pt. 1, #2) have nonzero horizontal components? a. 2 b. 3 c. 4 d. 5 - Answer C Which vectors shown in the figure (refe...

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14 pages

Written in 2024/2025

Grade A+

TestSolver9

Physics MCQ Key Current and updated practice exams Guaranteed A+ Self-Assessment Questions & Verified Correct answers (2025 / 2026) A ball of mass 0.4 kg is initially at rest on the ground. It is kicked and leaves the kicker's foot with a speed of 5.0 m/s in a direction 60° above the horizontal. The magnitude of the impulse imparted by the ball to the foot is most nearly - correct answer2 N*s A force of constant magnitude F and fixed direction acts on an object of mass m that i...

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14 pages

Written in 2024/2025

Grade A+

ProfAvery

The law of inertia states that an object... A. will continue moving in a straight line unless an outside force acts on it. B. at rest will remain at rest unless acted on by an outside force. C. that is not moving will never move unless a force acts on it. D. All of the Above - Answer D. All of the Above A bag of sports equipment has a mass of 10 kilograms and a weight of... A. 0.98 N B. 980 N C. 98N D. 9.8 N - Answer C. 98N (W= mg) Friction is a force that always acts... ...

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10 pages

Written in 2024/2025

Grade A+

TestSolver9

A light wave travels from water (n = 1.33) into a light oil (n = 1.22). The frequency of light in the water is 5.27 X 10'* Hz. What is the frequency of the light when it is in the oil? A. 1.36 X 10^14 Hz B. 5.27 x10^14Hz C. 3.55 X1 0^14 Hz D. 7.01 x 10^14 Hz E. 8.72 x 10" Hz - Answer Frequency does not change, answer is B What is the speed of light in the oil in the previous question? A 2.46 x 10^8 m/s B. 2.59 X 10^8 m/s C. 2.64 x 10^8m/s D.2.75 x 10^8 m/s E. 3.0 X...

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26 pages

Written in 2024/2025

Grade A+

TestSolver9

Indicate which of the following will produce a magnetic field: a. A moving electric charge b. An electric current c. The voltage of a battery not connected to anything d. A magnet e. An electric charge at rest f. A piece of any metal g. An ordinary piece of iron h. The Earth - Answer a. A moving electric charge b. An electric current d. A magnet h. The Earth When a charged particle moves parallel to the direction of a magnetic field, the particle travels in a: a. Straight line ...

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8 pages

Written in 2024/2025

Grade A+

TestSolver9

1. Two point charges, Q1 and Q2 are separated by a distance R. If the magnitudes of BOTH charges are Doubled and their separation is doubled, what happens to the electrical force that each charge exerts on the other one? A) increases by factor of 2 B) increases by factor of sqrt(2) C) decreases by factor of sqrt(2) D) increases by factor of 4 E) remains the same - Answer E F = Q1Q2/r^2 2. What is the direction of the electric field at the position of the X? A) 1 B) 2 C) 3 D...

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9 pages

Written in 2024/2025

Grade A+

TestSolver9

Two parallel wires are vertical. The one on the left carries a 10-A current upward. The other carries 5-A current downward. Compare the magnitude of the force that each wire exerts on the other. - Answer The two wires exert the same force on each other. Which of the following statements about the force on a charged particle due to a magnetic field are not valid? Check all that apply. It depends on the particle's velocity. It depends on the strength of the external magnetic field. ...

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3 pages

Written in 2024/2025

Grade A+

TestSolver9

A truck moves along a frictionless level road at a constant speed. The truck is open on top. A large load of gravel is suddenly dumped into the truck. The velocity of the truck: a. Increases b. remains the same c. decreases d immediately goes to zero - Answer C. Decreases A car of mass m is moving with a momentum p. How would you represent its kinetic energy in terms of these two quantities? a. p^2/2m b. 1/2p^2m c. pm d. pm/2 - Answer a. p^2/2m When a ping pong ball rolling w...

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5 pages

Written in 2024/2025

Grade A+

TestSolver9

Three boxes are pulled to the left by strings with negligible mass on a horizontal surface, as shown above. The masses of the boxes are m1, m2, and m3, where m3>m2>m1. Friction between the boxes and the surface is negligible. The figure below shows force diagrams for each box. Given that m3>m2>m1, how do the force F and string tensions TA and TB compare? - Answer Tb<ta<F Three boxes are pulled to the left by strings with negligible mass on a horizontal surface, as shown a...

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3 pages

Written in 2024/2025

Grade A+

TestSolver9

A ball is released from rest from the twentieth floor of a building. After 1 s, the ball has fallen one floor such that it is directly outside the nineteenth-floor window. The floors are evenly spaced. Assume air resistance is negligible. What is the number of floors the ball would fall in 3s after it is released from the twentieth floor? - Answer 7 to 10 floors A student is provided with a battery-powered toy car that the manufacturer claims will always operate at a constant speed. The st...

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10 pages

Written in 2024/2025

Grade A+

TestSolver9

(b) change in velocity and time - Answer The 2 measurements necessary for calculating average acceleration are (a)instantaneous velocity & time (b) change in velocity and time (c) distance and speed (d) velocity and distance (a) 0 - Answer What is the acceleration of a car that maintains a constant velocity of 100 km/hr for 10 secs? (a) 0 (b) 10 km/hr(s) (c) 10 m/hr(s) (d) 1000 km/hr(s) (c) 100 m/s - Answer Ten seconds after starting from rest, an object falling freely downward...

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3 pages

Written in 2024/2025

Grade A+

TestSolver9

A ball of mass 0.4 kg is initially at rest on the ground. It is kicked and leaves the kicker's foot with a speed of 5.0 m/s in a direction 60° above the horizontal. The magnitude of the impulse imparted by the ball to the foot is most nearly - Answer 2 N*s A force of constant magnitude F and fixed direction acts on an object of mass m that is initially at rest. If the force acts for a time interval ∆t over a displacement ∆x , what is the magnitude of the resultant change in the lin...

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12 pages

Written in 2024/2025

Grade A+

TestSolver9

Suppose that an object travels from one point in space to another. Make a comparison between the magnitude of the displacement and the distance traveled by this object. A) The displacement is either greater than or equal to the distance traveled. B) The displacement is always equal to the distance traveled. C) The displacement is either less than or equal to the distance traveled. D) The displacement can be either greater than, smaller than, or equal to the distance traveled. - Answer ...

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18 pages

Written in 2024/2025

Grade A+

TestSolver9

An object moving at a constant velocity must a) have a net force acting on it b) not have any force of gravity acting on it c) have all forces that act on it balancing each other d) eventually stop due to the force of gravity e) have no force of friction acting on it - Answer c) have all forces that act on it balancing each other Which of the following fundamental forces is the weakest? a) gravitational b) electromagnetic c) weak nuclear d) strong nuclear e) they are equally s...

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14 pages

Written in 2024/2025

Grade A+

TestSolver9

A blue sphere and a red sphere with the same diameter are released from rest at the top of a ramp. The red sphere takes a longer time to reach the bottom of the ramp. The spheres are then rolled off a horizontal table at the same time with the same speed and fall freely to the floor. Which sphere reaches the floor first? - Answer D Neither; the spheres reach the floor at the same time. A 12 kg box sliding on a horizontal floor has an initial speed of 4.0 m/s. The coefficient of friction b...

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21 pages

Written in 2024/2025

Grade A+

TestSolver9

The figure above shows a truck pulling three crates across a rough road. Which of the following shows the directions of all the horizontal forces acting on crate 2 ? - Answer three arrows pointing to the left (rope, crate 3, friction) cable arrow to the right Two blocks are on a horizontal, frictionless surface. Block A is moving with an initial velocity of v0 toward block B, which is stationary, as shown above. The two blocks collide, stick together, and move off with a velocity of v0/...

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7 pages

Written in 2024/2025

Grade A+

TestSolver9

Physics MCQ key Exam Questions and Answers...

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17 pages

Written in 2022/2023

Grade A

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