Physics 1 Module 4 Exam Questions with Correct
Answers.
Two masses are being pulled up a 30.0-degree incline by a force F parallel to the incline.
The acceleration up the incline is 1.00 m/s2 and the velocity is down the incline. The force is
applied to a 200-kg mass and a string connects the 200-kg mass to a 150-kg mass. The
coefficient of kinetic friction is 0.200. The force F is:
1,470 N
Two masses are being pulled up a 30.0 degree incline by a force F parallel to the incline.
The acceleration down the incline is 1.00 m/s2 and the velocity is up the incline. The force is
applied to a 200 kg mass and a string connects the 200 kg mass to a 150 kg mass. There is
no friction. The tension in the string is
585 N
A 20-kg sack of potatoes at the corner store weighs
44 lbs
20kg x 2.20lb/kg
Three objects experience interactions. Object A has mass, object B has electrical charge,
and object C has both mass and electrical charge. Which of the following statements is
true?
The gravitational force on C due to A has the same magnitude as the gravitational force on A due
to C.
, An object of mass m is hanging by a string from the roof of an elevator. The elevator is
increasing its upward speed. What is the tension in the string?
greater than mg
T=m(g+a) > mg
You are standing on a bathroom scale in an elevator that is not moving, and the scale reads
500 N. If the elevator were instead moving downward at a constant velocity of 4.50 m/s,
what would the scale read?
500 N
constant velocity means a=0, N=W
A box that weighs 300 N is pulled by a rope across a level surface with a constant velocity.
The rope makes an angle of 30.0 degrees above the horizontal, and the tension in the rope is
100 N. What is the magnitude of the normal force from the floor on the box?
250 N
300 N - 100sin(30) = 250 N
The force that holds charged atoms together is the
electromagnetic force.
Which of the following is a vector quantity?
length
Answers.
Two masses are being pulled up a 30.0-degree incline by a force F parallel to the incline.
The acceleration up the incline is 1.00 m/s2 and the velocity is down the incline. The force is
applied to a 200-kg mass and a string connects the 200-kg mass to a 150-kg mass. The
coefficient of kinetic friction is 0.200. The force F is:
1,470 N
Two masses are being pulled up a 30.0 degree incline by a force F parallel to the incline.
The acceleration down the incline is 1.00 m/s2 and the velocity is up the incline. The force is
applied to a 200 kg mass and a string connects the 200 kg mass to a 150 kg mass. There is
no friction. The tension in the string is
585 N
A 20-kg sack of potatoes at the corner store weighs
44 lbs
20kg x 2.20lb/kg
Three objects experience interactions. Object A has mass, object B has electrical charge,
and object C has both mass and electrical charge. Which of the following statements is
true?
The gravitational force on C due to A has the same magnitude as the gravitational force on A due
to C.
, An object of mass m is hanging by a string from the roof of an elevator. The elevator is
increasing its upward speed. What is the tension in the string?
greater than mg
T=m(g+a) > mg
You are standing on a bathroom scale in an elevator that is not moving, and the scale reads
500 N. If the elevator were instead moving downward at a constant velocity of 4.50 m/s,
what would the scale read?
500 N
constant velocity means a=0, N=W
A box that weighs 300 N is pulled by a rope across a level surface with a constant velocity.
The rope makes an angle of 30.0 degrees above the horizontal, and the tension in the rope is
100 N. What is the magnitude of the normal force from the floor on the box?
250 N
300 N - 100sin(30) = 250 N
The force that holds charged atoms together is the
electromagnetic force.
Which of the following is a vector quantity?
length
