It has to be the right answer for it to be correct
I don’t know the answer but try khan academy it’s very helpful with all subjects and is free
Answer:
mass = 4kg
Explanation:
Kinetic Energy = 1/2 x m x v²
where m = mass and v = velocity
So,
KE = 50
1/2 × m × 5² = 50
1/2 × m × 25 = 50
m = (50 x 2)/25
m = 100/25
m = 4 kg
<span>A. An impulse of a force changes the momentum of a body and has the same units and dimensions as momentum.</span>
Answer:
B
Explanation:
if you sit up straight you will have a proper posture
