The position of a ball rolling in a straight line is given by x=2-3.6t+4.4t2, where x is in meters and t in seconds.

What is the mass of a Falling Rock if it hits the ground with a force of 147 N

A 290-kg flatcar 25 m long is moving with a speed of 7.0 m/s along horizontal frictionless rails. A 80-kg worker starts walking from one end of the car to the other in the direction of motion, with speed 3.0 m/s with respect to the car.

Water quality and purification

Which of these temperatures is likely when a container of water at 20° C is mixed with water at 28° C?

This form of argument is an inductive form that reasons from the general to the specific.

An automobile travels on a straight road for 25 km at 32 km/h. it then continues in the same direction for another 25 km at 64 km/h.

Why is it important for engineers to design bumper cars safely

What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 m wide and 9.00 m below the top of the cliff?

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.

A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas decreases to 7.5 l.