Forces and motion

Distance and direction of an object's change in position from a starting point

• displacement
• distance
• motion
• reference point

Which of the following lists of physical quantities consists only of vectors?

• acceleration, force, volume

• mass, velocity, acceleration

• time, mass, velocity

• velocity, acceleration, force

What is the speed of a bus that travels 250 km in 2 hours?

Formula ?

Answer ?

• S= D/T

  125km/hr

• S= T/D

  521km/meters

• S=D/T Km/hr

• All fo the above

Paul runs at 200m/min for 30min. Find the distance covered.

• 6000m

• 6500m

• 5000m

• 5500m

Which of the following can be used to reduce friction?

• Rough surfaces

• Oiling the surface

• Using heavier objects

• Reducing the force applied

What is the direction of the frictional force?

• In the direction of motion

• In the opposite direction of motion

• Perpendicular to the direction of motion

• None of these

What is the purpose of making ships and aeroplanes streamlined?

• To increase air resistance

• To reduce air resistance

• To increase the gravitational force

• To increase the frictional force

A force is ____.

• a push or pull that can cause movement

• a magnet

• when someone does not work

This type of force resist motion between two surfaces that are pressed together

• contact
• gravity
• friction

Rougher surfaces have ...

• greater friction
• less friction
• the same level of friction