physics test
mega - ANS-10^6
kilo - ANS-10^3
centi - ANS-10^-2
milli - ANS-10^-3
micro - ANS-10^-6
nano - ANS-10^-9
The bush baby, a small African mammal, is a remarkable jumper. Although only about 8
inches long, it can jump, from a standing start, straight up to a height of over 7 feet! Use
the particle model and select the correct motion diagram for a bush baby's jump, from
its start until it reached its highest point - ANS-the dots would be getting closer together
You are standing on a straight stretch of road and watching the motion of a bicycle; you
choose your position as the origin. At one instant, the position of the bicycle is negative
and its velocity is positive. Is the bicycle getting closer to you or farther away? Explain -
ANS-if the position of the bicycle is negative it is to your left. The bicycles velocity is
positive or to the right so the bicycle is getting closer to you
You throw a rock upward. The rock is moving upward, but it is slowing down. If we
define the ground as the origin, the position of the rock is _____ and the velocity of the
rock is _____. - ANS-positive, positive
1. If Sam walks 100 m to the right, then 200 m to the left, his net displacement vector
__________. - ANS-points to the left
which of the following motions is describes by the motion diagram of the figure ( the
dots are getting farther apart) - ANS-a car pulling away from a stop sign
1. If a car has a negative displacement, what does that indicate? - ANS-The car has
moved in the negative direction.
, 1. A nerve conduction velocity test (NCV) is an electrical test that is used to evaluate the
function of nerves. A NCV on a patient's sciatic nerve (length of 0.80 mm) reveals a
conduction velocity of 20 m/sm/s. - ANS-0.040
Choose an example of a vertical motion with a positive velocity and a negative
acceleration - ANS-a. A ball thrown upward, before it starts to fall back down
1. Choose an example of a vertical motion with a negative velocity and a negative
acceleration - ANS-a. A ball dropped from a height during its downward motion
1. Janelle stands on a balcony, two stories above Michael. She throws one ball straight
up and one ball straight down, but both with the same initial speed. Eventually each ball
passes Michael. Which ball, if either, is moving faster when it passes Michael? Select
the correct answer. - ANS-The balls will be moving with the same speed when passing
Michael
The following options describe the motion of four cars.
Which car has the largest acceleration? - ANS-Goes from 0 m/sm/s to 3.8 m/sm/s in 1.0
ss
If C⃗=A⃗+B⃗C→=A→+B→, can C=0C=0 g - ANS-yes
If C⃗=A⃗+B⃗C→=A→+B→, can C<0 a - ANS-no
The slope at a point on a position-versus-time graph of an object is the __________. -
ANS-object's instantaneous velocity at that point
A 1-pound ball and a 100-pound ball are dropped from a height of 10 feet at the same
time. In the absence of air resistance, __________. - ANS-the two balls end in a tie
1. For a projectile, which of the following quantities are constant during the flight: xx, yy,
vxvx, vyvy, vv, axax, ayay? - ANS-a. Vx ax ay
1. Which of the quantities are zero throughout the flight (projectile motion) - ANS-Ax
a. When the ball comes back down, where will it land? - ANS-i. The ball will land directly
into the tube.
Does your answer change if the cart is accelerating in the forward direction? If so, how
reas - ANS-i. The answer changes: the ball will land behind the tube.
mega - ANS-10^6
kilo - ANS-10^3
centi - ANS-10^-2
milli - ANS-10^-3
micro - ANS-10^-6
nano - ANS-10^-9
The bush baby, a small African mammal, is a remarkable jumper. Although only about 8
inches long, it can jump, from a standing start, straight up to a height of over 7 feet! Use
the particle model and select the correct motion diagram for a bush baby's jump, from
its start until it reached its highest point - ANS-the dots would be getting closer together
You are standing on a straight stretch of road and watching the motion of a bicycle; you
choose your position as the origin. At one instant, the position of the bicycle is negative
and its velocity is positive. Is the bicycle getting closer to you or farther away? Explain -
ANS-if the position of the bicycle is negative it is to your left. The bicycles velocity is
positive or to the right so the bicycle is getting closer to you
You throw a rock upward. The rock is moving upward, but it is slowing down. If we
define the ground as the origin, the position of the rock is _____ and the velocity of the
rock is _____. - ANS-positive, positive
1. If Sam walks 100 m to the right, then 200 m to the left, his net displacement vector
__________. - ANS-points to the left
which of the following motions is describes by the motion diagram of the figure ( the
dots are getting farther apart) - ANS-a car pulling away from a stop sign
1. If a car has a negative displacement, what does that indicate? - ANS-The car has
moved in the negative direction.
, 1. A nerve conduction velocity test (NCV) is an electrical test that is used to evaluate the
function of nerves. A NCV on a patient's sciatic nerve (length of 0.80 mm) reveals a
conduction velocity of 20 m/sm/s. - ANS-0.040
Choose an example of a vertical motion with a positive velocity and a negative
acceleration - ANS-a. A ball thrown upward, before it starts to fall back down
1. Choose an example of a vertical motion with a negative velocity and a negative
acceleration - ANS-a. A ball dropped from a height during its downward motion
1. Janelle stands on a balcony, two stories above Michael. She throws one ball straight
up and one ball straight down, but both with the same initial speed. Eventually each ball
passes Michael. Which ball, if either, is moving faster when it passes Michael? Select
the correct answer. - ANS-The balls will be moving with the same speed when passing
Michael
The following options describe the motion of four cars.
Which car has the largest acceleration? - ANS-Goes from 0 m/sm/s to 3.8 m/sm/s in 1.0
ss
If C⃗=A⃗+B⃗C→=A→+B→, can C=0C=0 g - ANS-yes
If C⃗=A⃗+B⃗C→=A→+B→, can C<0 a - ANS-no
The slope at a point on a position-versus-time graph of an object is the __________. -
ANS-object's instantaneous velocity at that point
A 1-pound ball and a 100-pound ball are dropped from a height of 10 feet at the same
time. In the absence of air resistance, __________. - ANS-the two balls end in a tie
1. For a projectile, which of the following quantities are constant during the flight: xx, yy,
vxvx, vyvy, vv, axax, ayay? - ANS-a. Vx ax ay
1. Which of the quantities are zero throughout the flight (projectile motion) - ANS-Ax
a. When the ball comes back down, where will it land? - ANS-i. The ball will land directly
into the tube.
Does your answer change if the cart is accelerating in the forward direction? If so, how
reas - ANS-i. The answer changes: the ball will land behind the tube.
