IB Physics Topic 6

Which of the following depict the speed of the bowling ball?

• A
• B
• C
• D

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Centripetal acceleration acts towards the ___________ of the circular motion

• center
• circumference
• outside
• radius

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?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if one of the masses were doubled?

• 9
• 18
• 72
• 144

Tags

NGSS.HS-PS2-4

Two masses 8000 kg and 1500 kg are 1.5 m apart. Find their gravitational pull.

• 3 N

• 0.0003 N

• 3000 N

• 30 N

Tags

NGSS.HS-PS2-4

A race car completes three laps of a circular track with a radius of 35 m in 9.0 seconds. Determine the speed of the car.

• 3.9 m/s

• 73.3 m/s

• 24.4 m/s

• 1.0 m/s

Which of the following is Newton's Law on Gravitation?

• F=Gm₁m₂/r
• F = Gm₁m₂/r²
• F = Gm₁m₂/2r
• F = m₁m₂/2r

Tags

NGSS.HS-PS2-4

Angular velocity, ω defined as the rate of change of _________________

• angular distance

• uniform speed

• angular displacement

A car is making a turn at speed v. The radius of the turn is r and the centripetal force on the car is F.If the car rounds the same curve at speed 2v, the required centripetal force is

• 1/2 F

• F

• 2F

• 4F

Tags

NGSS.HS-PS2-1

What is the linear motion of an object when it is undergoing circular motion?

• linear velocity is constant
• speed and linear velocity is constant
• speed is constant but linear velocity is changing
• speed is changing but linear velocity is constant