False.
The mass of a softball is approximately 200 g (0.2 kg), while the knees are located approximately at 30 cm (0.3 m) from the ground. It means that the gravitational potential energy of the ball when it is dropped is
This corresponds to the total mechanical energy of the ball at the moment it is dropped, because there is no kinetic energy (the ball starts from rest). Then the ball is dropped, and just before it hits the ground, all this energy is converted into kinetic energy: but energy cannot be created, so its final kinetic energy cannot be greater than 0.6 J.
Speed= f x λ ( f= frequency. λ = wavelength)
Speed = 2Hz x 6m
= 12m/s
Answer:695.5 N
Explanation:
mass of child
Length of chain
Tension in each chain
(a)Tension at bottom point
At lowest Point
(b)Force exerted by Seat will be Equal to Normal reaction
When a toy truck collides into a toy car, the momentum of ____ is the same before and after the collision.
the truck plus the car