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Mechanics | Relativity
A block slides down a slope. Assuming there is no friction.
Option A. potential energy is gained at a greater rate than kinetic energy is lost.
Option B. kinetic energy is gained at the same rate as potential energy is lost.
Option C. kinetic energy is gained at a greater rate than potential energy is lost.
Option A. potential energy is gained at a greater rate than kinetic energy is lost.
Option B. kinetic energy is gained at the same rate as potential energy is lost.
Option C. kinetic energy is gained at a greater rate than potential energy is lost.
Mechanics | Relativity
An object accelerating down a slope would gain kinetic energy.
Option A. less than the potential energy lost.
Option B. greater than the potential energy lost.
Option C. equal to the potential energy
Option A. less than the potential energy lost.
Option B. greater than the potential energy lost.
Option C. equal to the potential energy
Mechanics | Relativity
Ignoring friction, if you let an object slide down a slope, at the bottom.
Option A. the potential energy is equal to the kinetic energy.
Option B. the potential energy is more than the kinetic energy.
Option C. the kinetic energy is more than the potential energy.
Option A. the potential energy is equal to the kinetic energy.
Option B. the potential energy is more than the kinetic energy.
Option C. the kinetic energy is more than the potential energy.
Mechanics | Relativity
Two points in the xy plane have Cartesian coordinates (5.50, −4.00) m and (−6.00, 6.00) m.
(a) Determine the distance between these points.
m
(b) Determine their polar coordinates.
(5.50, −4.00) r = m
(5.50, −4.00) θ = ° counterclockwise from the +x-axis
(−6.00, 6.00) r = m
(−6.00, 6.00) θ = ° counterclockwise from the +x-axis
(a) Determine the distance between these points.
m
(b) Determine their polar coordinates.
(5.50, −4.00) r = m
(5.50, −4.00) θ = ° counterclockwise from the +x-axis
(−6.00, 6.00) r = m
(−6.00, 6.00) θ = ° counterclockwise from the +x-axis
Mechanics | Relativity
A stone of 20 g is projected vertically upward with a catapult which rubber called has a force constant of 72 Nm-1, if the tension in the cord at the point of release is 36N find the velocity of projector of the stone and the maximum height attained by the stone
Mechanics | Relativity
Suppose you adjust your garden hose for a faster stream of water. You point the nozzle vertically up at a height of 1.8 m above the ground. When you quickly turn off the nozzle, you hear the water striking the ground next to you for 2.5 seconds. What is the speed of the water as it leaves the nozzle?
Mechanics | Relativity
The velocity of a particle is given by v =
v0
1 + At2
, where v0 = 25 m s−1
and A = 2.0 s−2
. What
is the acceleration at t = 0? At t = 2.0 s? At t → ∞?
v0
1 + At2
, where v0 = 25 m s−1
and A = 2.0 s−2
. What
is the acceleration at t = 0? At t = 2.0 s? At t → ∞?
Mechanics | Relativity
What kind of energy does an orange fruit still on the branch of the tree that 3m tall. Take the acceleration due to gravity as 9.8m/s2 and the mass of the orange is assumed to be 2g
Mechanics | Relativity
What is repose angle of friction?
Mechanics | Relativity
A small rock is thrown vertically upward with a speed of 27.0 m/sfrom the edge of the roof of a 31.0-m-tall building. The rock doesn't hit the building on its way back down and lands in the street below. Ignore air resistance. What is the speed of the rock just before it hits the street? How much time elapses from when the rock is thrown until it hits the street?
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#339914 on Dec 2023
#339914 on Dec 2023