A measure of how fast something is moving

always measured in terms of a unit of distance divided by a unit of time

the distance covered per unit time

Acceleration is defined as the CHANGE in

velocity divided by the time interval

time it takes to move from one place to another place.

distance divided by the time interval

A baseball catcher throws a ball vertically upward and catches it in the same spot as it returns to the mitt. At what point in the ball’s path does it experience zero velocity and nonzero acceleration at the same time?

the instant it leaves the catcher’s hand

the instant before it arrives in the catcher’s mitt

Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?

They would hit the ground at the same time.

They would be suspended in a vacuum.

Which would fall with greater acceleration in a vacuum (no air)—a leaf or a stone?

They would accelerate at the same rate.

It is difficult to determine without more information.

Suppose you are in a car that is going around a curve. The speedometer reads a constant 30 miles per hour. Which of the following is NOT true?

You and the car are accelerating.

Your acceleration is constantly changing.

Your direction is constantly changing.

If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by

a rate that depends on its initial speed.

A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would be

the same as the speed it had when thrown upwards.

less than the speed it had when thrown upwards.

more than the speed it had when thrown upwards.

Which would fall with greater acceleration in AIR—a leaf or a stone?

the stone - less air resistance

They would accelerate at the same rate.

It is difficult to determine without more information.

PCTI Motion Unit Test Review

Authored by Frank Migliorino

Physics

9th - 12th Grade

NGSS covered

Used 917+ times

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50 questions

Show all answers

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the speed this motion?

constant speed

not moving

speed increasing

speed increasing at a constant rate

Tags

NGSS.MS-PS3-1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What happened during A to B point?

not moving

increasing speed at a constant rate

moving at a constant speed

moving at 10 m/s²acceleration

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What happened during C to D point?

not moving

increasing speed at a constant rate

moving at a constant speed

moving at 0 m/s²acceleration

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What happened during E to F point?

not moving

increasing speed at a constant rate

moving at a 5 m/s

moving at 5 m/s²acceleration

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

which line represents the constant acceleration?

B and D

A, B, and D

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

which line shows a negative acceleration ?

B and C

A, B, and
A, B, and D

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is happening at C?

Stationary

Accelerating

Fast steady speed; moving away from the starting position

Slower steady speed; moving away from the starting position

Tags

NGSS.HS-PS2-1

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PCTI Motion Unit Test Review

What is the speed this motion?

What happened during A to B point?

What happened during C to D point?

What happened during E to F point?

which line represents the constant acceleration?

which line shows a negative acceleration ?

What is happening at C?

What is happening at D?

Which runner won the race?

Which runner had a head start?

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