Makeup quiz - Physics

A cyclist completed a 1500 m stage of a race in 37.5 s. What was her average speed?

• 40 m/s

• 30 m/s

• 45 m/s

• 48 m/s

What is the equation that can be used to calculate time?

• Time = distance × speed

• Time = distance/speed

• Time = distance + speed

• Time = distance - speed

If the forces of an object are balanced,

• The object is not moving

• The object is moving fast

• The object is moving slowly

• The object is either not moving or moving at constant speed.

The force of friction when an object moves through air or water is known as?

• Upthrust

• Air resistance

• Weight

• Friction

An astronaut has a mass of 90 kg. What is his weight on the surface of the Earth?

• 90 N

• 900 N

• 950 N

• 1000 N

What is the standard unit of force?

• Kg

• Km

• m/s

• N

An astronaut is weighed before he sets off to the Moon. He has a mass of 80 kg. His weight on Moon will be …………… than that of Earth

• Less

• Greater

• Same as

• None of the above

The turning effect of a force is known as?

• Pressure

• Force

• Moment

• Weight

Pressure …….. when the surface area increases

• Increases

• Decreases

When a spring is stretched, its length increases from 58 cm to 66 cm. What is the extension of the spring?

• 9 cm

• 5 cm

• 10 cm

• 8 cm