Circular motion day 1

The velocity is always _____ to the line of a circle. 

• outwards
• towards the center
• tangent
• faster

Centripetal acceleration acts towards the ___________ of the circular motion

• centre
• circumference

What object experiences uniform circular motion?

• A car speeding up as it turns left
• A car traveling around a roundabout at a constant speed
• A car slowing down as it crests a tall hill
• A car traveling down the road at a constant speed

When moving in a horizontal circular path, what direction is acceleration?

• In the opposite direction of motion

• Tangential to the circle in the direction of motion

• Outwards from the center of the circle

• Towards the center of the circle

Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.

• 10 N
• 20 N
• 30 N
• 40  N

How is acceleration seen in circular motion?

• Velocity increases as the object travels in a circle.

• Velocity decreases as the object travels in a circle.

• The object changes direction as it travels in a circle.

• There is no acceleration as an object travels in a circle.

A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?

• 
• 
• 
• 

Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.

• 10 N
• 20 N
• 30 N
• 40  N

What is the direction of the acceleration at point A, if the ball is revolving clockwise?

• up

• right

• down

• left