Physics term 2

Question 1

What is the unit of mass?

Answer 1

KG

Question 2

What is the unit of force

Answer 2

N

Question 3

Whats the unit of power

Answer 3

Watts

Question 4

Which of the following statements regarding momentum is true?

a) Momentum is a scalar quantity
b) Momentum is conserved in elastic collisions only
c) Momentum is the product of mass and velocity.
d) Momentum depends on the reference frame

Answer 4

D) Momentum is the product of mass and velocity

Question 5

An object weighs 19N on a planet where the acceleration is 3.8m/s squared what is the mass of the object

Answer 5

5.0kg

Question 6

Give one advantage and one disadvantage of wind turbines

Answer 6

1. No harmful gas released
2. variable supply

Question 7

The diagram shows a rectangular metal block with dimensions 2.5cm3,04.5* the block is resting on the ground
The block exerts a pressure of 0.23 N/cm squared on the ground the angles that exerts pressure down is 4.5 and 2.5 what is the weight of the block

Answer 7

2.6N