Before it reaches the ramp, the toy's kinetic energy is
(1/2) (mass) (speed²)
= (1/2) (3 kg) (16 m²/s²)
= 24 Joules .
On the way up the ramp, its kinetic energy will change to
gravitational potential energy, and it'll stop when it's height
gives it 24 joules of potential energy.
Potential energy = (mass) (gravity) (height)
24 joules = (3 kg) (9.8 m/s²) (height)
Divide each side by 29.4 kg-m/s² (that's the same as 29.4 newtons):
Height = 24 joules / 29.4 newtons
= 0.816 meter higher than the bottom of the ramp.
We can compare the two by their kinetic energies. The kinetic energy is the energy when an object
is in motion. It is expressed as the product of the mass of the object and the
square of the velocity divided by two. We assume a velocity of 1 m/s for this problem.<span>
KE = mv^2/2
KE1 = 10 (1)^2
KE1 = 10 J
KE2 = 1(1)^2
KE2 = 1 J
Therefore, c</span><span>ompared to the 10 kg ball, the 1 kg ball has lesser kinetic energy.</span>
Answer:
An object changes position if it moves relative to a reference point. The change in position is determined by the distance and direction of an object's change in position from the starting point (displacement). Direction • Direction is the line, or path along which something is moving, pointing, or aiming.
Explanation:
Vector A is of magnitude 12 m and it makes an angle of 37 degree with Y axis
So here we can say that
Similarly we have
So here we have
option A is correct
Answer:
116 N.
Explanation:
Given,
mass of the ball, m = 0.145 Kg
initial speed = 0 m/s
Final speed = 40 m/s
time = 50 ms = 0.05 s
Force is equal to change in momentum per unit time
F = 116 N
Force of the pitcher hand on the ball is equal to 116 N.
