D)
Explanation:
Coz the position changes with time but the position change is not constant throughout time So, D) does not have constant velocity
Let the cannonball be thrown at a height of h above ground.
Then the potential energy of the ball is
V = m*g*h
where
m = the mass of the ball
g = 9.8 m/s²
Also, the kinetic energy of the ball is
K = (1/2)mu²
where
u = 5 m/s, the vertical launch velocity.
Ignore wind resistance.
Because the total energy is preserved, the total energy (n the form of only kinetic energy) when the ball strikes the ground is
(1/2)mV²
where V = vertical velocity when the ball strikes the ground.
Expressions for both the initial and final energy are equal regardless of whether the ball s thrown downward or upward.
Therefore there is no difference in the landing speed.
Answer: There is no difference.
Answer:
Muscular Force = Uses when walking
The Force of wind = Force used to turn a windmill
Force of Gravity = Used to drag thing to the centre of the earth
Steam = Type of force used to operate machines
Work = Amount of force Times the distance moved
Foot - Pound = Moving one pound one foot
Newton meter = moving one newton one meter
Explanation:
He is describing the motorcycle's acceleration. <span />
