Free Printable Unit 1 Physical Quantities, Motion in 2 or 3 dimensions

Worksheets

Unit 1 Physical Quantities, Motion in 2 or 3 dimensions

Total questions: 31

Worksheet time: 1hrs 6mins

Name

Class

Date

Which of the following shows an object at rest?

Which of the following show an object moving in the negative direction?

Use the graph above and pick the most accurate description of the object's motion

object is moving at constant speed

object is speeding up

object is at rest

object is slowing down

Which of the following is a physical quantity that has a magnitude but no direction?

Vector

Scalar

Resultant

Frame of Reference

How do we combine vectors that are in the same direction?

Add them

Subtract them

Use the Pythagorean theorem

Take the square root

A sailboat moves West across a river 1250 meters at 5 m/s. The boat encounters a current going South at 7 m/s. How long will it take for the boat to cross the river?

250 seconds

145 seconds

1.4 seconds

179 seconds

A motorboat with a speed of 5.0 meters per second in still water is headed East. The motorboat then comes to a river heading South with a speed of 3.3 meters per second. What is the boat's resulting velocity when the boat enters the flow of the river?

3.3 m/s S

5.0 m/s E

6.0 m/s SE

8.3 m/s SE

When something has speed in a certain direction it is called ___________.

motion

position

velocity

speed

What is the horizontal acceleration of a projectile?

0 m/s²

9.8 m/s²

10.

The shape of the path a projectile follows...

circular

linear

wavy

parabolic

11.

In a projectile motion we always have...

1 component (x)

3 components (x,y, and z)

2 components (x and y)

0 components

12.

What is the direction of the acceleration for any projectile?

The direction the projectile is traveling.

Down

Sideways

13.

Once a projectile is launched, what is the only force that affects its motion?

mass

friction

inertia

gravity

14.

A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65 m/s. Assume no air resistance. How long until the ball reaches the ground?

0.45 s

0.67 s

0.22 s

0.47 s

15.

A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?

500.76 m

31.63 m

103.7 m

305.05 m

16.

A particle moves through a circular arc of length l and radius r in time t. Which expression gives its angular velocity about the centre of the circle?

1 / rt

r / lt

2π / lt

2πr / t

17.

An engine has a component rotating at 3000 revolutions per minute in a circle of radius 8.0 cm.

Which of the following is its centripetal acceleration?

25 m s^-2

7900 m s^-2

3.1 x 10⁴ m s^-2

7.2 x 10⁷ m s^-2

18.

A body is moving with speed v and angular velocity ω in a circle of radius r.

What is its centripetal acceleration?

rω

vω

v / r

v² / r

19.

Which represents the acceleration of the ball?

20.

The velocity is always _____ to the line of a circle.

outwards

towards the center

tangent

faster

21.

Which statement is true about an object that is traveling in uniform circular motion?

The speed of the object varies.

The net force on the object is directed toward the center of the circular path.

The direction of the object's velocity is constant.

The net force on the object is directed away from the center of the circular path.

22.

Two cars are moving in the same direction with a speed of 30 km/h. They are separated from each other by 5 km. Third car moving in the opposite direction meets the two cars after an interval of 4 minutes. What is the speed of the third car

30 km/h

35 km/h

40 km/h

45 km/h

23.

A boat is moving with a velocity 3i + 4j with respect to ground. The water in the river is moving with a velocity – 3i – 4j with respect to ground. The relative velocity of the boat with respect to water is

– 6i – 8j

6i +8j

$5\sqrt{2}$

24.

– 6i – 8j

6i +8j

$5\sqrt{2}$

25.

The speed of a boat is 5 km/h in still water. It crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water is

1 km/h

3 km/h

4 km/h

5 km/h

26.

Name the missing force....

weight force

normal force

frictional force

tension force

27.

8 N to the left , and 4 N to the right. Find the net force. Is this balanced

12 N Right No

4 N Left No

12 N Right Yes

4 N Left Yes

28.

What is the NET FORCE of this diagram?

17 N, right

17 N, left

23 N, right

12 N, up

29.

If a conservative force does positive work on an object, what happens to the speed of that object?

Increases

Decreases

30.

A frame of reference attached on the earth is

An inertial frame of reference

A non inertial frame of reference

Both a nd b

None

31.

When you're in a car, what is your frame of reference?

the car

the road

the Earth

there is none

100 %

Unit 1 Physical Quantities, Motion in 2 or 3 dimensions

Total questions: 31

Worksheet time: 1hrs 6mins

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