Question 1

A car with a mass of 2000 kg was accelerating at 1.5 m / s². What was the net force acting on the car?

Accepted Answer

3000 N

Answer

1330 N

Answer

0 N

Answer

2000 N

Question 2

Which of the following is not a good application of friction?

Accepted Answer

the gears on a bicycle requiring constant lubrication

Answer

a bus braking to a halt in front of the traffic lights

Answer

a ladder leaning on the wall

Answer

a person walking on the ground

Question 3

The diagram below shows the speed-time graph of an object. Which of the following describes the resultant force acting on the object?

Accepted Answer

It is constant

Answer

It is zero.

Answer

It is decreasing.

Answer

It is increasing.

Question 4

A person of mass 50 kg is wearing shoes with a total contact area of 0.040 m²with the ground. What is the pressure exerted by the person on the ground?(Note: 1kg is equivalent to 10 N, please convert mass(kg) to weight(N) first before finding Pressure(F/A))

Accepted Answer

12500 Pa

Answer

6250 Pa

Answer

625 Pa

Answer

1250 Pa

Question 5

The inertia of a body is its resistance to changes in motion. Which of the following will change inertia?

Accepted Answer

mass

Answer

volume

Answer

weight

Answer

density

Related quizzes

Related quizzes