Phys Term 1 Review

Question 1

A table pushes a book up. What is the reaction force?

Accepted Answer

The book pushes the table down

Question 2

Momentum is not conserved for a ball colliding with a stationary wall. Why?

Accepted Answer

The wall has external forces from the ground acting on it

Question 3

What term is used to describe speed in a specific direction?

Accepted Answer

velocity

Question 4

ACCELERATION means:

Accepted Answer

Speeding up, Slowing down, or Changing Direction

Question 5

What term describes the tendency of all objects to resist a change in motion?

Accepted Answer

inertia

Question 6

Airbags reduce the force of impact on passengers by

Accepted Answer

increasing time of impact

Question 7

Which of these objects have the most momentum?

Accepted Answer

A heavy object moving fast

Question 8

Which segment of the graph represents standing still?

Accepted Answer

C

Question 9

Superman at rest in space throws a more massive asteroid. Which moves faster?

Accepted Answer

Superman

Question 10

Is this collision elastic or inelastic?

Accepted Answer

Elastic.

Question 11

Which motion (dot) diagram below represents a fast, constant speed?

Accepted Answer

1

Question 12

What is the name of the upward force?

Accepted Answer

Normal

Question 13

Which of these is the metric unit for mass in physics?

Accepted Answer

Kilogram

Question 14

Forces are measured in....

Accepted Answer

Newtons (N)

Question 15

Which of these is the proper SI unit for length?

Accepted Answer

Meter

Question 16

What is the formula for momentum?

Accepted Answer

Mass x Velocity

Question 17

When the net force on an object equals 0 Newtons, we know the forces are _____.

Accepted Answer

balanced

Question 18

What is the net force on the box shown below?

Accepted Answer

15 N up

Question 19

What is Newton's 3rd Law?

Accepted Answer

For every action there is an equal and opposite reaction

Question 20

What is Impulse?

Accepted Answer

An object's change in momentum

Question 21

Which equation expresses Newton's 2nd Law?

Accepted Answer

F = ma

Question 22

I will need a greater force to accelerate an object with more ___________________

Accepted Answer

Mass

Question 23

Heavier objects fall faster than lighter objects because gravity accelerates them at a greater rate.

Accepted Answer

False

Question 24

What is the acceleration due to gravity on Earth?

Accepted Answer

9.81 m/s2

Question 25

What is the weight of a 10-kg dog on the Earth?

Accepted Answer

98.1 N

Phys Term 1 Review

Questions 25

Phys Term 1 Review

Questions 25