On earth, the acceleration of a free-falling object would be ___. However, in this quiz not all the questions have this as the acceleration.
Answer
9.8
1
5
9.8²
Question 4
Question
You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand at a speed of 30 m/s. What is the amount of energy the object has?
Answer
KE=945 joules
KE=1890 joules
KE=2958 joules
KE=623 joules
Question 5
Question
A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weighs 12 kg and accelerates at 6 m/s. What is the amount of energy the object has?
Answer
PE=498 joules
PE=564 joules
PE=42 joules
PE=1512 joules
Question 6
Question
A car is traveling with a velocity of 40 m/s. If the kinetic energy is 73,600 joules, what is the mass of the object?
Answer
13,121 kg
36 kg
102 kg
92 kg
Question 7
Question
A 99 kg cinder block is sitting on a platform 20 m high with an acceleration of 15 m/s. What is the amount of energy the object has?
Answer
KE=36,000 joules
KE=297,000 joules
KE=154,000 joules
KE=3,000,000 joules
Question 8
Question
Acceleration= 6, Mass= 145, and Height= 21 m. What is the amount of energy the object has?