An object has P_i of 20kgm/s ends up with a P_f of 40kgm/s. How long would a 5N force needed to act?

What is the kinetic energy at point C?

A spring with constant of 1500 N/m is stretched 20 cm from its rest position. Determine the energy stored in the spring.

A ball is thrown downward from the top of a roof with a speed of -25 m/s. After 2 s, its velocity will be

At what point is v_y= 0 m/s?

If you throw a baseball straight up, what is its acceleration at the highest point?

A 2.0 kg object is sliding down a slope inclined at 30 degrees to the horizontal. A frictional force of 0.5 N acts on the object, calculate its acceleration.

The coefficient of friction, μ, is a number between 0 and 1 the tells us the relationship between the two surfaces in contact. A low value for μ means that...

A projectile is launched at an angle of 30 degrees to the horizontal with a velocity of 8.0 ms^-1. Calculate the time of flight for the projectile.

A projectile is launched at an angle of 30 degrees to the horizontal with a velocity of 11 ms^-1. If the time of flight for the projectile is 1.1 s, calculate the range of the projectile.

What information does the area under a force-time graph provide?

What information does the area under a force-extension graph for an elastic object provide?

If the initial velocity is U and the angle is α, what is the equation for the total time of flight of the projectile in the diagram.