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to the horizontal. The coefficient of
friction between the particle and the slope is 0.1. The particle is 5 m from the bottom of the
slope. It is projected up the slope with a speed 4 m s-1
?
(a) Find the distance travelled up the slope from the starting point until the particle comes
to rest.
(b) Find the time until the particle reaches the bottom of the slope.
of 4000N. There is a constant air resistance of 400 N.
(a) Find the time taken to reach a speed of 48 m s-1
from rest.
(b) When travelling at 48 m s-1
the train enters a horizontal tunnel 400 m long. In the tunnel
air resistance increases to 1000 N. Find the speed at which the train leaves the tunnel.
bounces on the floor it loses 10% of its speed.
a) Work out how much momentum was absorbed by the floor in the first bounce?
b) Show that the ball first fails to reach a height of 1 m after the third bounce.
a. P.E at the greatest height
b.the kinetic energy on reaching the ground, assuming g=10m/s and neglecting air resistance
[04:20, 07/09/2021] Ibrahim Mohamed: Batman, whose mass is 80.0kg, is dangling on the
free end of a 12.0-m rope, the other end of which is fixed
to a tree limb above. He is able to get the rope in motion
[04:21, 07/09/2021] Ibrahim Mohamed: as only Batman knows how, eventually getting it to swing
enough that he can reach a ledge when the rope makes a
60.0°angle with the vertical. How much work was done by
the gravitational force on Batman in this maneuver?
A shopper in a supermarket pushes a cart with a force of
35.0 N directed at an angle of 25.0°downward from the
horizontal. Find the work done by the shopper on the cart
as he moves down an aisle 50.0 m long
how much weight is generated by an 80kg person? in the planet earth
A jumbo jet taxiing down the runway receives word that it must return to the gate to pick up an important passenger who was late to his connecting flight. The jet is traveling at 45.0 m/s when the pilot receives the message. What is the acceleration of the plane if it takes the pilot 5.00 s to bring the plane to halt?
the world speed record on water was set on october 8, 1978 by ken warby. if ken drove his motorboat a distance of 1000m in 7.045 s, how fast was his boat moving? in m/s and in miles/hour and kph.
#339914 on Dec 2023