15/25 A 2600 gram bird is moving at a speed of 25 m/s. How much kinetic energy does the
bird have?
32,500 J
650,000 J
65,000 J
812,500 J
Immunity

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

When solid surfaces slide over each other the kind of friction that occurs is called friction

What is the change in internal energy if 20 j of heat is released from a system and the system does 50 j of work on the surroundings? a. -70 j b. 30 j c. -30 j d. 70 j