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Mechanics | Relativity
A ship moves along the equator to the east with velocity v=30 kin/hour.The southeastern wind blows at an angle 60 to the equator with velocity v=15 km/hour.Find the wind velocity v relative to the ship and the angle between the equator and the wind direction in reference frame fixed to the ship.
Mechanics | Relativity
The resistive force (drag force) applied on an object moving in a gas is described by:
Mechanics | Relativity
The displacement of a block attached to a horizontal spring whose spring constant is 2N/m is given by
x=1.8cos(6.6t−0.8)m.
The acceleration of the block at t=1s is
m/s2.
x=1.8cos(6.6t−0.8)m.
The acceleration of the block at t=1s is
m/s2.
Mechanics | Relativity
the algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. this is as per tht principle of?
Mechanics | Relativity
A ball of mass 2.00 kg is tied to a string and swung in a horizontal circle of radius 5 m at a speed of 10 m/s. The magnitude of the centripetal force required for its movement is
Mechanics | Relativity
A metal ball of mass 100g is released from rest at the top of a vertical cliff. It hits the ground after falling for 4 seconds and penetrates 10cm into the ground. Taking g=10m/s², determine the height of the cliff.
Mechanics | Relativity
An intense stream of water of cross section area A strikes a wall at an angle X with the normal to the wall return back elastically.if the density of water Is d and it’s velocity is v, then the force exerted in the wall will be
Mechanics | Relativity
A child of mass 40kg at A climbs to the top of a playground slide B and slides down to C.
At the top of the slide the child has gained 1200J of potential energy .55% of this energy is lost to the surroundings in sliding down the 12 m from B to C (g=10N/kg)
Q calculate the mean force actibg against the motion of the child between B to C
At the top of the slide the child has gained 1200J of potential energy .55% of this energy is lost to the surroundings in sliding down the 12 m from B to C (g=10N/kg)
Q calculate the mean force actibg against the motion of the child between B to C
Mechanics | Relativity
An object starts from rest an accelerates at a constant rate in the +x direction and at some magnitude of velocity, in the +x direction, it has covered a displacement of 6 meters in the +x direction in a time of 3.6 seconds. A different object starts from rest and accelerates at a constant rate in the -x direction with a magnitude of acceleration equal to a factor 3 times less than the first object. When the second object reaches a magnitude of velocity which is a factor of 3 larger than the first objects, was is the magnitude of the second object's?
Mechanics | Relativity
A ball rolls off a 108 cm high table at 5.6 m/s. What is its speed when it hits the ground, in m/s?
A baseball is hit at an angle of 26.3° and velocity of 26.2 m/s on level ground. A stiff head wind causes a horizontal acceleration of 1.97 m/s2 opposing the ball's motion. How far in meters does the ball travel on level ground?
You are the quarterback ready to pass the ball to a receiver already 23.5 m down the field (from you). He is running straight away at a constant 6.31 m/s, and you will release the ball at an angle of 45.9°. With what speed (in m/s) should you throw the ball?
A baseball is hit at an angle of 26.3° and velocity of 26.2 m/s on level ground. A stiff head wind causes a horizontal acceleration of 1.97 m/s2 opposing the ball's motion. How far in meters does the ball travel on level ground?
You are the quarterback ready to pass the ball to a receiver already 23.5 m down the field (from you). He is running straight away at a constant 6.31 m/s, and you will release the ball at an angle of 45.9°. With what speed (in m/s) should you throw the ball?
