IB End of Year Physics

The difference between a car hitting a wall vs. a car hitting a hay stack is

• the Impulse on the car hitting the wall is greater
• the change in momentum of the car hitting the wall is greater
• the force on the car hitting the hay stack is greater
• the collision time of the car hitting the hay stack is greater

Tags

NGSS.HS-PS2-2

A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?

• 25 m/s
• 375 m/s
• 25 kg m/s
• 375 kg m/s

Tags

NGSS.HS-PS2-2

True or False: Weight is a Force

• True
• False

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A pendulum oscillates as shown. At which of the following positions is the potential energy equal to the total energy?

• A

• B

• C

• Not enough information

A pendulum oscillates as shown. At which of the following positions is the kinetic energy equal to the total energy?

• A

• B

• C

• Not enough information given.

What is the symbol for maximum displacement of a simple harmonic oscillator?

• x₀

• x

• ω

• a

A cyclist is travelling due south with velocity u. The wind is blowing from the north-east with velocity w. cyclist u wind The wind has a velocity v relative to the cyclist, where v = w – u.
Which vector diagram shows the magnitude and direction of velocity v? 

• A
• B
• C
• D

A ball of mass m is thrown up to height h in air with an initial velocity v, as shown.
Air resistance is considered negligible. The acceleration of free fall is g. What is the total work done by the gravitational force on the ball during its flight from P to Q? 

• zero
• ½mv²
• mgh
• 2 mgh 

Tags

NGSS.HS-PS2-4

A ball is dropped from rest at time t = 0 on to a horizontal surface from which it rebounds. Which one of the following graphs best shows the variation of speed v of the ball with time t from the time t = 0 to the time that the ball leaves the surface? 

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

A block rests on a rough horizontal plane and a force P is applied to the block as shown. 
The normal reaction between the plane and the block is N and the frictional force between the block and the plane is F. The coefficient of static friction between the block and the plane is μS and initially P is zero.
As P is increased in value, which one of the following statements is true concerning the relationship between F, N and μS ? 

• F is always equal to μ_SN
  
• F is always greater than μ_SN 
• F is always less than μ_SN
  
• F can be equal to μ_SN 

Tags

NGSS.HS-PS2-1