A paper weight is dropped from the roof of a block of multi story flats. Each storey being 3 metre high. It passes the ceiling of the 20th storeys at 30m/sec. If g = 10.0m/sec^2, How many storeys does the flat have.

What two things do you need to know to describe the velocity of an object?

A 5.4 g lead bullet moving at 261 m/s strikes a steel plate and stops. If all its kinetic energy is converted to thermal energy and none leaves the bullet, what is its temperature change? Assume the specific heat of lead is 128 J/kg · ◦ C.

A kicker kicks the football with a force of 100 N. What is the force that the football exerts on the kicker's foot?

A 125kg automobile with a tangential speed of 48.0 km/h follows a circular road that has a radius of 35.0m how large is the centripetal force

A 3 N force pushes on a object for 20 meters. Find the work done

The acceleration of an object increases by the force applied to it and decreases based on it's mass.

Expresa en terminos de la unidad fundamental

What color does Indigo turn things?

Which equation expresses the conservation of mechanical energy in a system that involves kinetic energy, gravitational potential energy, and elastic potential energy?

Which of these is an example of temperature changing over time? A. a pan cools off on the stove B. a frozen dinner sits in the freezer C. a mug is at room temperature on the counter D. two glasses of water are filled from the tap and mixed together