A 10kg rock is pushed off the edge of a bridge 50 meters above the ground. What was the kinetic energy of the rock before it began to fall

Kiley went 5.7 km/h north and then went 5.8 km/h west. From start to finish, she went 8.1 km/h northwest. Which best describes her numbers? 5.7 km/h north and 5.8 km/h west are instantaneous speeds, while 8.1 km/h northwest is the average speed. 5.

Explain how you can use a speedometer and a clock to tell how far you've traveled in a car if the cars odometer is not working

After walking across a carpet, a boy feels a spark between his hand and a doorknob. If the boy's hand is negatively charged just before he touches the doorknob, which particles moved from the carpet to his hand (Chose one of the answers below) A

A bicycle moves from rest to 5 m/s in 5 sec. what is the acceleration of the bicycle

The elements most likely to form more than one type of ion are the transition metals alkali metals halogens alkaline earth metals

What color of light can plants "see"?

Two tiny beads are 25 cm apart with no other charges or fields present. Bead A carries 10 µC of charge and bead B carries 1 µC. Which one of the following statements is true about the magnitudes of the electric forces on these beads

A ball is thrown straight up at 20 m. What is the balls velocity as it hits the ground?

Block 1 and Block 2 have the same mass, m, and are released from the top of two inclined planes of the same height making 30 degree and 60 degree angles with the horizontal direction, respectively.

Water waves change direction when they encounter water of different depths and begin to move at different wave speeds. This is called A. reflection B. constructive interference C. the Doppler effect D. refraction