HELP ASAP PLEASE, 8TH GRADE SCIENCE 50 POINTS

1) A 2kg bowling ball sits on top of a building that is 40 m tall. What type of energy does it have?

Potential energy


Energy of acceleration


Kinetic energy


Chemical energy


2) A 2 kg bowling ball sits on top of a building that is 40 meters tall. How much potential energy does it have?

784 J


80 J


784 N


78.4 J


3) A 4 kg bowling ball rolls at a speed of 5 m/s on the roof of a building that is 30 meters tall. What type of energy does the bowling ball have?

Both potential and kinetic energy


Kinetic energy


Potential energy


Speed


4) A 4 kg bowling ball rolls at a speed of 5 m/s on the roof of a building that is 30 meters tall. What is its kinetic energy?

50 J


10 J


120 J


1,176 J


5) An 8 kg bowling ball rolls at a speed of 10 m/s on the ground. What type of energy does the bowling ball have?

Kinetic


Acceleration


Potential


Speed


6) An 8 kg bowling ball rolls at a speed of 10 m/s on the ground. What is its kinetic energy?

40 J


80 J


160 J


400 J


7) A 20 kg child is tossed in the air by her parent. What is her kinetic energy when she is 2 meters off the ground traveling at 5 m/s?

200 J


40 J


100 J


250 J


8) A 1,000 kg car has 50,000 J of kinetic energy. What is its speed?

100 m/s


150 m/s


50 m/s


10 m/s


9) A 200 kg boulder has 39,200 J of gravitational potential energy. What height is it at?

50 m


20 m


150 m


200 m


10) A 1 kg model airplane has 12.5 J of kinetic energy and 98 J of gravitational potential energy. What is its speed?

5 m/s


10 m/s


15 m/s


20 m/s