Acar has a kinetic energy of 1.9 x 10^3 joules. if the velocity of the car is decreased by half, what is the kinetic energy a.)2.2 x 10^2 joules b.)4.7 x 10^2 joules c.)5.2 x 10^2 joules d.)5.8 x 10^3 joules

B).

Explanation:

As we know that the kinetic energy of the car depends on mass of car and its speed

so we will say that

now we know that if we will change the mass or speed of the car then the kinetic energy of the car will change accordingly

so here if we change the velocity of car and decrease it by half

then we have

so it is given as

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

amplitude

hope this