Question

(a).What is the maximum potential energy gained by a ball of mass 0.20 kg

When it is thrown vertically upwards with an initial velocity of 20 m/s. [2]​

Answer 1

Answer:

40 kg/met.

Explanation:

potential energy =mgh

so we need to find h=?

u=20m/s

m=0.20kg

we have an equation

v^2=u^2-2gh

0=[20]^2-2×10×h

20h=400

h=20

then put the value of h in mgh.

mgh=0.20×10×20

mgh=40