Answer:
A. 10 joules
Explanation:
Given parameters:
Mass of object = 4kg
Speed = 5m/s
Unknown:
Kinetic energy of the the object = ?
Solution:
Kinetic energy is the energy due to a moving body.
So;
mathematically;
K.E = 
x m v²
m is the mass
v is the velocity
K.E = x 4 x 5 = 10J
Answer:
14400 kg
Explanation:
According to Newton's second law of motion, F = ma
F = 3600 N
a = 4m/s2
3600 = m/4
3600*4 = m
m = 14400 kg
Therefore the mass of the car is 14400 kg
Hope u understand
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Answer:
Sound waves travels fastest in solids.
Sound waves travels slowest in gases.
Explanation:
Sound waves travels fastest in solids.
Sound waves travels slowest in gases.
Answer: So they can find your mistakes that you made you skipped over
Explanation:
