Question

A ball of mass 0.4kg is thrown vertically upward with a velocity of 14 m/s . Calculate its kinetic energy and potential energy after 1 second

Answer 1

Answer:

K.E is 39.2 m/s

P.E is 4m/s

Explanation:

Answer 2

Answer :-

$\boxed{answer = 76 j}$

v = u + at

.

= 14+10×1

.

=24m/s

.

$\implies \bf \: ke = \frac{1}{2} mv {}^{2}$

$\implies \bf \: \frac{1}{2} \times 0.4 \times 24$

$\bf \: 115.2 \: j$

$\implies \bf \: s = ut + \frac{1}{2} at {}^{2}$

$\bf \: = 14 \times 1 + \frac{1}{2} \times 10 \times 1 {}^{2}$

$\implies \bf \: 14 + 5 = 19m$

$\implies \bf \: e = mgh = 0.4 \times 10 \times 19 = 76 \: j$

$\boxed{answer = 76 j}$