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Question1
A dock worker loading crates on a ship ?nds that a 24 kg crate, initially at rest on a horizontal surface, requires a 63 N horizontal force to set it in motion. Though, after the crate is in motion, a horizontal force of 47 N is necessary to keep it moving with a constant speed.
The acceleration of gravity is 9.8 m/s
Find out the coefficient of static friction between crate and floor.
Question2
When a piece of wood is pressed against a spring and compresses the spring by 4.00{rm cm}, wood gains a utmost kinetic energy K when it is released.
How much kinetic energy (in terms of K) would the piece of wood gain if the spring were compacted 15.8 {rm cm} instead?
Question3
A 135 g baseball, moving along x-axis with speed 33.0 m/s, strikes a fence at a 45 degree angle and rebounds along the y-axis with unchanged speed. Provide the x and y components of its change in momentum.
Discover the magnitude of acceleration
What horizontal force is needed to hold bag in new position
What is value of Earths magnetic field
What is the greatest possible distance from the wall
What is rms speed of the atoms at temperature
What is the magnitude of displacement
What is tension in the cord
Coefficient of kinetic friction between tires and road
Conclude the magnitude of angular acceleration
What is the change in kinetic energy of the puck
What is weight of the parachutist
Find out altitude of the airplane
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