Answer:
(a) The height of the cliff is 19.6 m
(b) The horizontal distance travelled by the ball is 60 m
Explanation:
Given;
initial horizontal velocity of the ball, u = 30 m/s
initial vertical velocity of the ball, v = 0
time taken for the ball to hit the ground, t = 2 s
(a) height of the cliff
h = vt + ¹/₂gt²
h = 0 + ¹/₂gt²
h = ¹/₂gt²
h = ¹/₂(9.8)(2)²
h = 19.6 m
(b) horizontal distance traveled by the ball = Range
Range = ut
Range = 30 (2)
Range = 60 m
Relax. Everything's under control.
If you use up all your exclamation points now, then
you won't have any left when you really need one.
(1.4 x 10⁵ newton/coulomb) x (-1.6 x 10⁻¹⁹ coulomb)
= (1.4 x 10⁵ x -1.6 x 10⁻¹⁹) newton-coulomb/coulomb
= - (1.4 x 1.6) x 10⁵⁻¹⁹ newton
= - 2.24 x 10⁻¹⁴ newton
Speed is scalar quantity that is defined only by its magnitude and is represented with one value.
Velocity on the other side is a vector quantity that is defined with its magnitude and direction. The speedometer measures and displays the speed of the vehicle.
Where the needle points on the speedometer that is the speed of the vehicle.
The velocity is not explicitly shown, but if f the needle is moving<span>, you can get a rough idea of acceleration. If the needle is going clockwise the vehicle is accelerating.</span>
There are three main factors that affect wave formation: wind velocity, fetch, and duration.
Waves are most commonly caused by wind. Wind-driven waves, or surface waves, are created by the friction between wind and surface water. As wind blows across the surface of the ocean or a lake, the continual disturbance creates a wave crest.
Answer:
Where is kinetic energy the least?, and most?
Explanation:
Least : When the Moon is farthest from Earth in its nearly elliptical orbit, its speed is least. Its kinetic energy has become least, and its potential energy is greatest.
Further : Kinetic energy, form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.
May be different for you, but i really hope I helped out.