Answer:
Explanation:
Given
maximum height reached 
suppose Projectile is launched vertically with initial velocity u
applying equation of motion
where v=final velocity
u=initial velocity
a=acceleration
s=displacement
Here final velocity is zero so
for twice initial velocity
Answer: the wall contracts the force exerted by his head. The wall produces the opposite force which is equal to the force his head bangs the wall with.
Explanation: if his head exerts a much greater force than the wall can counteract the wall will be destroyed, if the wall exerts a much greater force than his head exerts he will be pushed far back and might even suffer a broken head.
The wall in this case provides the opposite reactive force.
Momentum of the wagon increases by (200 x 3)
= 600 newton-sec
= 600 kg-m/sec
Answer:
A
Explanation:
an electric motor is a machine that converts electrical energy to mechanical energy. a generator is a machine that converts mechanical energy to electrical energy
Organ system is the correct response hope this helps
