Question

Questions
1 Calculate the ke of
a a 1kg trolley travelling at 2 m/s
b a 29 0.002 kg) bullet travelling at 400 mis
ca 500 kg car travelling at 72 kmin.
2 a What is the velocity of an object of mass 1kg which has
200) of ke?
b Calculate the p.e. of a 5kg mass when it is om
6m, above the ground. (g = 10 1kg)
3 A 100g steel ball falls from a height of 1.8m on to a metal
plate and rebounds to a height of 1.25 m. Find
a the p.e. of the ball before the fall (g = 10 m/s).
bitske, as it hits the plate,
cits velocity on hitting the plate,
d its ke. as it leaves the plate on the rebound,
e its velocity of rebound
4 It is estimated that 7 x 106kg of water pours over the
Niagara Falls every second. If the falls are 50 m high, and if
all the energy of the falling water could be harnessed, what
power would be available? (g = 10 N/kg)
please help me to solve these questions ​

Answer 1

Thus the potential energy of the mass is 300 J.

Explanation:

Question statement:

Calculate the p.e. of a 5 kg mass when it is on 6 m, above the ground. (g = 10 m/s^2)

Given data:

Mass of object = 5 kg

Height = 6 m

g = 10 m/s^2

The formula of potential energy:

P.E = m.g.h

P.E = 5 x 6 x 10

P.E = 300 J

Thus the potential energy of the mass is 300 J.

Also learn more

Calculate the potential energy of an object of mass 10 kg. That is suspended at a height of 20 meter from the ground take g = 10 m/s²  ?

https://brainly.in/question/9685777

Answer 2

Answer:

I hope you got your answer