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Linear Motion

Total questions: 26

Worksheet time: 18mins

Name
Class
Date
1.

Vectors have both (a)   and direction

2.

Find the

vx and vy values of the triangle.

a)

vy=17 m/s, vx=36.25 m/s

b)

vy=32 m/s vx=14.25 m/s

c)

vy=26 m/s vx=45.03 m/s

d)

vy=9.5 m/s vx=41.29 m/s

3.

If a man pulls a box with a force of 90 N at an angle of 45 degrees, then what are the X and Y components of the force?

a)

X = 0 N, Y = 45 N

b)

X = 1 N, Y = 45 N

c)

X = 64 N, Y = 64 N

d)

X = 90 N, Y = 45 N

4.

Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

a)

Newtons 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

None of these

5.

F=m×aF=m\times a  

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

d)

None of these

6.

For every action (force) in nature there is an equal and opposite reaction.

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

d)

None of these

7.

The rate of change of momentum is known as?

a)

force

b)

impulse

c)

inertia

d)

acceleration

8.

What is the product of mass and velocity known as?

a)

acceleration

b)

momentum

c)

impulse

d)

torque

9.

Determine the acceleration of the object in the image. (units - m/s/s - unnecessary)

(a)  

10.

Rutherford has a mass of 15kg. What is his weight on Earth? - in N.

a)

146N

b)

147N

c)

148N

d)

149N

11.

v=u+atv=u+at  

a)

final velocity = initial velocity + (acceleration x time)

b)

initial velocity = final velocity + (acceleration x time)

c)

displacement = change in velocity + (acceleration x time)

d)

change in velocity = displacement + (acceleration x time)

12.

A city block happens to be a square of side 800m. A cycling courier spots a cat at one corner of the block and does a full lap in an attempt to run it over. The lap takes 3 min 20 secs. What is the cat's average speed, in m/s?

a)

16m/s

b)

17m/s

c)

26m/s

d)

27m/s

13.

In an displacement v time graph, the gradient represents the...

(a)  

14.

In a velocity v time graph, the area under the graph represents:

a)

The distance travelled

b)

The displacement

c)

The acceleration

d)

None of these

15.

In a velocity v. time graph, the gradient represents the...

(a)  

16.

In an acceleration v. time graph, the area under the graph represents a change in...

(a)  

17.

Luke drops a ball from a height of 15 m. What velocity does the ball hit the ground at in m/s?

a)

7627\sqrt[2]{6}  

b)

17.15

c)

64

d)

23

18.

A girl has a weight of 88 N on the moon, where g = 1.6 N/kg. What is her mass?

a)

55kg

b)

55N

c)

88kg

d)

88N

19.

A force applied to an object by another body that is not in direct contact with it is classified as

a)

Non-contact force

b)

Contact force

c)

Zero force

d)

None of these

20.

Which is a non contact force?

a)

Gravitational force

b)

Frictional force

c)

Magnetic force

d)

Kinetic force

21.

Two bodies start moving from same point along a straight line with velocities v1=6 m/s and v2=10 m/s respectively. After what time does their separation become 40 m?

a)

1 second

b)

10 seconds

c)

100 seconds

d)

1 hour

22.

p=mvp=mv  

a)

Formula for momentum

b)

Formula for impulse

c)

Formula for velocity

d)

Formula for weight

23.

If an object undergoes a change in momentum of 10 kg m/s in 3 seconds what is the force?

a)

3.3 kg m/s

b)

3.3 N

c)

3 kg m/s

d)

3 N

24.

If an object with a mass of 12 kilograms is moving at 10 metres per second, what is its momentum?

a)

120 kg m/s

b)

120 N

c)

1.2 kg m/s

d)

12 N

25.

Change in momentum of an object is equal to the_______

a)

Entropy

b)

Internal energy

c)

Impulse

d)

Enthalpy

26.

The impulse is the area under a...

a)

distance v time graph

b)

velocity v time graph

c)

force v time graph

d)

momentum v time graph