A 0.155 kg arrow is shot upward at 31.4 m/s. What is its potential energy (PE) when it leaves the bow?

A ball is thrown straight up from a bridge at a speed of 11.0 m/s. What will be its velocity (speed and direction) after 2.0 seconds?

If the total number of earthquakes annually averages 14,500 approximately how many are magnitude 5 or higher? and show work.

What causes the ocean waves that surfers use for their sport? a. density differences in water b. salinity differences in water c. sunlight heating water d. wind blowing across water

A motor uses an electric current to produce a magnetic field and create mechanical energy, true or false?

When did you notice a greater elevation of blood pressure and pulse?

A car is moving with a speed of 22 m/s. The driver then brakes, and the car comes to a halt after 6.5 s. What is the distance covered by the car after the driver brakes, until it comes to a stop? A) 36 m B) 72 m C) 140 m D) 210 m

Which of the following best explains why an explosive charge in a cannon can cause a cannonball to fly out of the cannon with a high velocity? A. because chemical potential energy can convert to gravitational potential energy B.

Distance divided by time what is velocity

The decay constant of a radioactive nuclide is 4.6 x 10^-3 s^-1. What is the half-life of the nuclide? 2.5 min 2.0 min 1.4 min 3.6 min 3.1 min

A furlong is an old british unit of length equal to 0.125 mi, derived from the length of a furrow in an acre of ploughed land. a fortnight is a unit of time corresponding to two weeks, or 14 days and nights.