Free Printable Unit 9 Assessment 5/19/22

Worksheets

Unit 9 Assessment 5/19/22

Total questions: 23

Worksheet time: 32mins

Name

Class

Date

In each of the following cases, determine where the car has no acceleration?

A car speeds up after a stoplight turns green.

A car slows down as it approaches a red light

A car with the cruise control set at 80 km/h going down a straight highway

A car turning a curve at a constant speed

A roller coaster accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds. What's the acceleration?

24 m/s²

18 m/s²

16 m/s²

16 m/s

What are balanced forces?

forces of the same size, in opposite directions

the same size in the same direction

forces in opposite directions

forces at right angles to each other

In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N.What is the net force?

50N to the left.

350N to the left.

350N to the right.

50N to the right.

It took 3.5 hours for a train to travel the distance between two cities at a velocity of 120 miles/hr. How many miles lie between the two cities?

34 miles

420 miles

120 miles

360 miles

You ride your bike in a straight line at a constant speed of 10 km/h.

Acceleration occurred because speed increased.

Acceleration did not occur because neither speed nor direction changed.

Acceleration occurred because you changed directions.

Acceleration occurred because speed decreased.

A golf ball accelerates off a tee at 15m/s², changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

750 s

35 s

0.3 s

3.3 s

If an object is not moving the forces acting upon it are _____________

unbalanced

weak

balanced

Hulk Smash!

If an object is pushed with a force of 20N and moves with an acceleration of 2.0 m/s^2, what is the object's mass?

10 kg

40 kg

20 kg

0.1 kg

10.

Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?

The ribbon will move to the left and group A will win the tug-of-war.

The ribbon will move to the left and group B will win the tug-of-war.

The ribbon will move to the right and group B will win the tug-of-war.

The ribbon will move to the right and group A will win the tug-of-war.

11.

When an object has a net force that is GREATER than 0 Newtons, the object is...

balanced and still

balanced and moving at a constant speed

unbalanced and accelerating

unbalanced and still

12.

An object in motion will stay in what kind of motion as long as the net forces acting on it are zero?

slowing motion in a straight line

accelerating motion in a straight line

constant motion in a straight line

constant motion in an unpredictable direction

13.

After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals

twice the force with which it was fired

the same amount of force with which it was fired

1/2 the force with which it was fired

zero, since no force is required to keep it moving.

14.

If I slowly roll a ball down the hallway, why does it eventually stop?

Because of Newton's First Law

Friction and Air Resistance

Inertia

It wouldn't stop, it would keep going until it hits a wall.

15.

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?

The one with a mass of .78 kg will have the greatest acceleration.

The one with a mass of .52 kg will have the greatest acceleration.

They will both accelerate at the same rate.

16.

The masses of four objects are given in this table. If all objects are struck with the same amount of force, which one will have the greatest acceleration?

Object 1

Object 2

Object 3

Object 4

17.

Name the missing force...

tension force

frictional force

normal force

spring force

18.

What is the NET FORCE of this diagram?

17 N, right

17 N, left

23 N, right

12 N, up

19.

When the air is released from a balloon, the air moves in one direction, and the balloon moves in the opposite direction. Which law best explains the motion of the balloon?

Newton's Law of Inertia

Newton's Law of F=ma

Newton's Law of Force Pairs

Newton's Law of Biology

20.

Object X has twice the mass of Object Y. Both objects are accelerating at the same rate. Which statement best describes the motions of Object X and Object Y.

Object X is travelling at twice the speed as Object Y.

Object X is travelling at half the speed as Object Y.

Object X requires twice the force to accelerate at the same rate as Object Y.

Object X requires half the force to accelerate at the same rate as Object Y.

21.

A rocket is sent into space. When the power dies out, the rocket will just keep floating and moving in space forever (unless an unbalanced force, such as a meteor, runs into it).

Newton's 1st Law

Newton's 2nd Law

Newton's 3rd Law

None of them

22.

When there is an INCREASE in MASS of an object you will have a DECREASE in ______________.

friction

acceleration

force

gravity

23.

A person steps out of the boat and onto the dock. As the person moves forward onto the dock, the boat moves backward. Which statement best describes the backward motion of the boat as the person steps forward?

For every action there is an equal and opposite reaction.

Every mass exerts a force on every other mass.

An object at rest tends to stay at rest.

Friction opposes the motion of an object.

100 %

Unit 9 Assessment 5/19/22

Total questions: 23

Worksheet time: 32mins

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