a) the car
The kinetic energy of an object is directly proportional to its mass and the square of its velocity. In this case, the car has a higher kinetic energy due to its higher mass and velocity compared to the hippo.
Which of the following has a higher kinetic energy?
A 1000 kg car rolling at a speed of 5 m/s across the floor or a 1500 kg hippo swimming at a speed of 2 m/s
a
the car
b
their kinetic energies are equal
c
the hippo
d
not enough information to determine
1 answer