What is the acceleration of softball if it has a mass of 0.5 kg and hits the catcher's glove with a force of 25 N?
What is 50
100
What is the KE of a 24 kg mass moving at 2 m/s?
What is 48 j
100
How much potential energy is present in an 88kg marathon runner after she has crossed the finish line at the top of a 215m high hill?
What is 185416 J
100
A 35 kg mass is lifted to a height of 4 m. What is the gravitational potential energy?
What is 1372 j
100
A motorbike has 4500 j of KE and is traveling at 15 m/s. What is its mass?
What is 45 Kg
200
A 10 kg bowling ball would require what force to accelerate down an alleyway at a rate of 3 m/s/s?
What is 30
200
A ball weighs 2.45 N and is thrown so that it has a velocity of 12 m/s. What is the kinetic energy?
What is 18 j
200
A 19 kg ball flies 10m into the air. Calculate it's potential energy.
What is 1862 J
200
A German Shepherd with a mass of 35 kg is lifted to a height of 4 m. What is its gravitational potential energy?
What is 1372 J
200
A rock has kinetic energy of 110 j and is traveling at a velocity of 3 m/s. What is the mass of the object?
What is 24.44 kg
300
A man ran on a treadmill for 1,600 seconds. At the end of his run, the treadmill indicated his energy output as 240,000 J. What average power did he generate?
What is 150 W
300
What is the kinetic energy of a 56 kg mass moving with a velocity of 3 m/s?
What is 252 j
300
What is the potential energy of an 800kg horse which has climbed a distance of 1600m?
What is 12544000 J
300
When does something have gravitational potential energy?
What is when it is above the ground
300
What is the mass of a falling rock if it produces a force of 147 N?
What is 15
400
How much power is used to lift a box that weighs 50 newtons 10 meters in 10 seconds?
What is 50 watts
400
A bike is travelling at a speed of 14 m/s. The mass of the bike is 25 kg. What is the weight of the bike? What is the kinetic energy of the bike?
What is Weight = 245 N
KE = 2450 j
400
A dog weighing 19 N is sitting on a couch that is 1.5m high. Calculate the potential energy of the dog.
What is 28.5 J
400
A weight lifter raises a steel bar of 25kg through a height of 1.8m. If g=10n/kg calculate the change to the gravitational potential energy.
What is Gravitational potential energy(GPE) = mass x Gravitational field strength(GFS) X Height.
GPE= 25kg x 10n/kg x 1.8m = 450J
400
What is the mass of a truck if it produces a force of 14,000 N while accelerating at a rate of 5 m/s/s?
What is 2,800
500
A person standing in a canoe exerts a force of 700 N to throw an anchor over the side. Find the acceleration of the canoe if the total mass of the canoe and the person is 100 kg.
What is 7
500
A 10 kg mass is lifted to 2 m. What is its weight? What is its potential energy? How much work is being done?
(Hint: The potential energy and work being done is the same)
What is Weight = 98 N
KE = 196 j
500
How much potential energy is present in a 13 kg ball resting at the top of a 200m high cliff?
What is 25480 J
500
The weightlifter lowers the bar by 0.3m. How much will the gravitational potential energy change by? Q2
What is GPE= Mass x GFS x Height
GPE=25x10x1.5 = 375
GPE= 450-375
=450-375 = 75J
500
During a softball game, a softball is struck by a bat and has an acceleration of 1,500 m/s/s. If the net force exerted on the softball by the bat is 300 N, what is the softball's mass?