HESI A2 test Physic - Kinetic And Potential Energy
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20 Terms
A ball, with a mass of 2.3 kg, rolls across a table with a velocity of 0.2 m/s. What is the Kinetic Energy of the ball?
0.046 J
A baseball that weighs 0.125 kg is thrown at 40.1 m/s. What is the Kinetic Energy of the ball?
101 J
A basket of oranges sits on a table. The basket has 58.6 J of gravitational Potential Energy and the table is 1.25 m high. What is the mass of the basket?
4.78 kg
A bug flies at a rate of 0.5 m/s. This bug has 0.000625 J of Kinetic Energy. What is the mass of the bug?
0.005 kg
A person jumps in the air. When they reach their peak height, they are 0.65m off of the ground. The person as a mass of 83 kg. What is their gravitational potential energy?
530 J
An ice skater, who has a mass of 70 kg has 1500 J of Kinetic Energy. What is the velocity of the skater?
6.54 m/s
Energy, both Kinetic and Potential, are expressed in what units?
Joules
A person has a mass of 76 kg. What is this person’s weight on Earth?
745 N
If a person has a weight of 815 N on earth, what is their mass in kg?
83.1 kg
James pulls a rope and he has a mass of 77 kg. He pulls 20 m of the rope and does 40 N×m of work on the rope. What was the force he put on the rope to pull it up?
2 N
The acceleration of objects above the earth’s surface is due to which of the following forces?
Gravity
The gravitational acceleration constant for the moon is -1.62 m/s2. If a person has a mass of 76 kg on earth, what is their mass on the moon?
76 kg
The gravitational acceleration constant for the moon is -1.62 m/s2. If a person has a mass of 76 kg on earth, what is their weight on the moon?
123 N
What is Potential Energy?
The energy that is stored in some way.
What is the energy that an object has because of its velocity?
Kinetic Energy
What is the force that an object exerts on the ground due to gravity called?
Weight
What is the rate of acceleration for an object in free fall?
-9.8 m/s²
Which of the following is the formula for Kinetic Energy?
KE = ½ mv²
Which variable is replaced with g = – 9.8 m/s2 in the equation F=ma when the force is gravity?
a
When you multiply Force x Distance, what do you get?
Work