Which of the following describes a scientific law? A. based of scientific evidence B. explains how and why nature does what it does C. not based of scientific evidence

Two students are playing paddle ball with a 5 kg spongy ball. If the ball is thrown at the batter with a speed of 5 m/s and bounces off with a speed of 10 m/s. What is the magnitude of the impulse imparted on the ball by the bat?

How does a change in medium affect light

A bungee jumper hangs from a bungee cord with zero velocity. If the bungee cord has a spring constant of 76 N/m and the jumper has a mass of 110 kg, how stretched is the bungee cord past its natural length?

While chopping down his father's cherry tree, george discovered that if he swung the axe with a speed of 25 m/s, it would embed itself 2.3 cm into the tree before coming to a stop. if the axe head had a mass of 2.

A car turns into a driveway that slopes upward at a 9.0 ∘ angle. The car is moving at 7.5 m/s. If the driver lets the car coast, how far along the slope will the car roll before being instantaneously at rest and then starting to roll back?

A 1.4 kg particle moves along an x axis, being propelled by a variable force directed along that axis. Its position is given by x = 3.0 m + (4.0 m/s) t + ct2 - (1.6 m/s3) t3, with x in meters and t in seconds. The factor c is a constant. At t = 3.

One reason that life as we know it is unlikely to exist on Venus is because A. the surface temperature is too high. B. the surface temperature is too low. C. the surface has too much ice covering it. D. there is no atmosphere.

An object has a kinetic energy of 275 j and a momentum of magnitude 25.0 kg · m/s. find the (a) speed and (b) mass of the object.

with the wind a driver travels 300 mies in 5 hours. The return trip against the wind take the driver 6 hours. At what rate would thedriver travel without any wind What is the rate of thew ind?

How does sound travel from your vocal cords to someone's ear?