# SPH4U- UNIT 2 TEST AND UNIT 3 TEST Engineering MCQ (Multiple Choice Questions Sample)

this is a physics paper. it has multiple questions that are used to answer the various papers presented

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SPH4U- UNIT 2 TEST AND UNIT 3 TEST

SPH4U- UNIT 2 TEST

PART A: MULTIPLE CHOICE

1 A force of 1.0 N is equivalent to 1.0 kg m/s2 ( Answer is d)

2 The force in the hand that will throw the ball and the reaction force that is the gravitational force. (Answer is a)

3 The third law of Newton states that for every action, there exist a reaction that is opposite and equal to the action. (Answer is c)

4 To achieve constant velocity of an object, the Newton’s second law says that applying force on an object, it will have an acceleration (F=ma). Hence an object, moving at constant velocity, must have a net force acting on it (Answer is a)

5 Net force is proportional to the variation of velocity. F = m dv/dt. Then acceleration is always in the direction of the net force (Answer is a)

6 Considering that the positive sign represents towards the West and the negative sign represents towards the East , then

F = +13.5 N -21.2 N -33 N +25.3 N

F = +38.8 N -54.2 N

F = -15.4 N

This means 15.4 N towards East (Answer is b)

7 F = ma

Let the unknown force be x

(-20 N-10 N+ x N) = 5.0 kg X 8.0 m/s2

- 30 + x = 40

x = 40 + 30

x = 70 N (Answer is d)

8 F = ma

a = F/m

a = 58.0 N (W)/ 0.45 kg

a = 129 m/s2 (W) (Answer is c)

9 The third law of Newton states that for every action, there exist a reaction that is opposite and equal to the action. the force of the child pulling up on the Earth (Answer is b)

10 F = ma

a = F/m

a = 36 N / (20 + 4) kg

a = 36/ 24

a = 1.5 m/s2

36 N – x N = 20 kg x 1.5 m/s2

36 – x = 30

X = 6.0 N (Answer is b)

1

d

2

a

3

c

4

a

5

a

6

b

7

d

8

c

9

b

10

b

PART B: MATCH

1 1776096232410001776095230505Quantity of matter in an object.

A)coefficient of friction

2 17760953860790Force that opposes the motion between two objects in contact.

B) force of gravity

3 Ratio of the magnitude of friction to the magnitude of the normal force.

C) free-body diagram

4 177609527178000Force exerted by string, ropes, fibres, and cables.

D) friction force

5 177609526733400Vector sum of all the forces acting on an object.

E) inertia

F) mass

G) net force

H) normal force

I) tension force

J) weight

1

F

2

D

3

A

4

I