You can tell whether velocity is changing because velocity is the rate/speed of motion of something in a direction either it increase or decrease in the speed or a change in its direction that will causes its velocity to change.
Answer:
Kinetic energy,
Explanation:
It is given that,
Mass of ball, m = 0.9 kg
It is dropped form a height of 7 m, h = 7 m
When the ball is at certain height it will have only potential energy. As it hits the ground, its potential energy gets converted to kinetic energy as per the law of conservation of energy.
So,
So, the kinetic energy when it hits the ground is 61.74 Joules.
Answer:
Explanation:
Velocity of an object is a vector quantity. Its magnitude represents the speed of the object and its direction represents the direction of motion. ... If you have a displacement-time graph for an object in rectilinear motion, the slope of the graph tells you velocity of the object
This is true. they have numbers on the side that help to determine the volume.
Answer:
Newtons 3rd law
Explanation:
Newtons third law states; for every action, there is an equal but opposite reaction force.
The action force in this case in the foot kicking the soccer ball, but the reaction force is the ball 'kicking' back on the foot. This reaction force has the same magnitude as the action force, but opposite in direction, which is why the foot is left stinging.