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Force and Motion

Total questions: 45

Worksheet time: 27mins

Name
Class
Date
1.
What is the name for a single force on an object with the same effect as all the forces combined?
a)
big
b)
total
c)
resultant
d)
sum
2.

What is the resultant force?

a)

17 N, Left

b)

6N, Right

c)

11N, Left

d)

23N

3.

Which of the following produces the largest acceleration when forces are applied on a block?

a)
b)
c)
d)
4.

What is the resultant force?

a)

400 N, Up

b)

400 N, Down

c)

800 N, Up

d)

800 N, Down

5.
Balanced or Unbalanced?
a)
Balanced 
b)
Unbalanced
6.

What is the tool for measuring the force?

a)

spring scale

b)

weight balance

7.

Slope of distance time graph represents-

a)

speed

b)

acceleration

c)

displacement

d)

none of these

8.

SI unit of acceleration is-

a)

ms-1

b)

ms-2

c)

ms2

d)

none of these

9.

Which of the following is a scalar quantity?

a)

acceleration

b)

velocity

c)

distance

d)

displacement

10.

Rate of change of velocity is called-

a)

average speed

b)

average velocity

c)

acceleration

d)

none of these

11.

When an object travels equal distance in equal intervals of time, it is said to be in-

a)

uniform acceleration

b)

non uniform accelration

c)

uniform motion

d)

non uniform motion

12.

Displacement is represented by-

a)

slope of s-t graph

b)

slope of v-t graph

c)

area under s-t graph

d)

area under v-t graph

13.

Speed of an object is equal to the magnitude of velocity if-

a)

the object is travelling in uniform circular motion

b)

the object is travelling along a straight path

c)

the initial and final positions are same

d)

none of these

14.

An object moving in a circular path with uniform speed experiences a continuous change in its

a)

direction

b)

velocity

c)

speed

d)

both a and b

15.

The nature of s-t graph for rest -

a)

straight line passing through origin

b)

straight line parallel to time axis

c)

straight line perpendicular to time axis

d)

straight line overlapping time axis

16.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
17.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
18.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
19.
What two measurements are necessary for calculating speed?
a)
Mass and time
b)
Temperature and mass
c)
Mass and distance
d)
Distance and time
20.

In which of the following graphs below are both runners moving at the same speed?

a)
b)
c)
d)
21.
What is this graph showing?
a)
Constant Speed
b)
Acceleration (speeding up)
c)
Deceleration (slowing down)
d)
No motion
22.

 

18.    Which is TRUE about Galileo’s cannon ball experiment?

a)

 

When objects are dropped simultaneously at the same height, they will reach the ground at the same time.

b)

When an object has twice mass as much as another, they will reach the ground at the same time.

c)

When an object with a different mass is dropped simultaneously at the same height, they will not reach the ground at the same time.

d)

When an object is dropped simultaneously with different height, they will not reach the ground.

23.

A particle is moving in a circular path of radius r. The displacement after half a circle would be:

a)

Zero

b)

π r

c)

2 r

d)

2π r

24.

Displacement

a)

Motion of object in circular path with uniform speed

b)

Body in uniform motion

c)

Rate of change of velocity with respect to time

d)

Shortest distance between initial and final position

25.

A worker covers a distance of 40 km from his house to his place of work, and 10 km towards his house back. Then the displacement covered by the worker in the whole trip is?

a)

zero km

b)

10 km

c)

30 km

d)

50 km

26.

Acceleration is a vector quantity, which indicates that its value

a)

Is always negative

b)

Is always positive

c)

Is zero

d)

Can be positive, negative or zero

27.

Mass is the amount of _______ an object has

a)

Matter

b)

weight

28.

What is this tool called....

a)

Ruler

b)

Thermometer

c)

Beaker

d)

Graduated Cylinder

29.

The unit for volume is

a)

grams

b)

milliliters (mL)

c)

Newton

d)

Centimeters Cubed

30.

 

What two types of measurements make up DENSITY? 

a)

Volume and Weight

b)

Temperature and Mass

c)

Mass and Volume

31.

What is the density of water?

a)

34 g/mL

b)

1 g/mL

c)

29 g/mL

d)

6 g/mL

32.

What is the unit for density ?

a)

g/ mL

b)

g

c)

gcm3\frac{g}{cm^3}  

d)

cm4cm^4  

33.
Jack has a rock. The rock has a mass of 14 g and a volume of 2 cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)

.14 g/cm3

34.
Why do some substances float on water?
a)
they are warmer than water
b)
they are cooler than water
c)
they are more dense than water
d)
they are less dense than water
35.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
36.

Just after she jumps out of the plane (before the parachute opens). The relative forces will be

a)

Balanced

b)

Unbalanced

37.

Just after she jumps out of the plane (before the parachute opens). The relative forces will be

a)

Weight force is equal to the friction force

b)

Friction force is constant

c)

Weight force is greater that the friction force

d)

Friction force is greater than the weight force

38.

Just after she jumps out of the plane (before the parachute opens). The net force will be

a)

zero

b)

upward

c)

downward

39.

Just after she jumps out of the plane (before the parachute opens). The sky diver will have

a)

a constant speed

b)

a constant acceleration

c)

a constant velocity

40.

After the 60 seconds, the parachutist pulls the cord and opens her parachute.

Explain how the parachute reduces the speed of the parachutist when it is just opened.

a)

The friction force decreases

b)

The weight force decreases

c)

The weight force increases

d)

The friction force increases

41.

Identify true statements:

a)

Drag is increasing

b)

Velocity is increasing

c)

There is no drag

d)

Weight is increasing

e)

Deceleration

42.

An object in equilibrium can still have forces acting on it.

a)

True

b)

False

43.

An object travelling at terminal velocity moves at a steady speed.

a)

True

b)

False

44.

An object travelling at terminal velocity moves in a constant direction.

a)

True

b)

False

45.

Which diagram shows the forces acting on Peter when he is falling at Terminal Velocity?

a)

1

b)

2

c)

3

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