Question

A 6.0-kg block is released from rest 80m above the ground. When it has fallen 60m its
kinetic energy is approximately:
al 4800
73500
c) 1200)
d) 120]
What is the P.E. lost by a man of mass 50 kg if he jumps from a 10 m high building?​

Answer 1

Answer:

4800

Explanation:

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Answer 2

Answer:

Explanation:

mass = 6kg

s = 80 m

u = 0

a = 10m/s^2

2as = v^2 - u^2

2 * 10 * 80 = v^2 - 0

v^2 = 1600m/s

K.E = 1/2 mv^2

= 1/2 * 6 * 1600

=3 * 1600

= 4800

- @

2    Mass = 50kg

      s = 10m

      g = 9.8m/s^2 or 10m/s^2

      P.E = mgh

      =  50 * 10 * 10 or 9.8

      =  5000 or 4900

  Hope it helps.........