Please help really desperate as it is due in a couple of hours.
A cricket ball is hit from a point A with velocity of (pi + qj)ms-1 at an angle theta above the
horizontal, i and j are the unit vectors horizontally and vertically upwards respectively. The point
A is 0.8 m vertically above the point 0, which is on horizontal ground.
The ball takes 4 seconds to travel from A to B, where B is on the ground and OB = 64 m, as
shown in the diagram. By modelling the motion of the ball as that of a particle moving freely under gravity,
a) find the value of p and the value of q
b) find the initial speed of the ball
c) find the exact value of tan theta
d )find the length of time for which the cricket ball is at least 5 m above the ground.
e )State an additional physical factor which may be taken into account in a refinement of the above model to make it more realistic.
Answers: 1
Physics, 22.06.2019 04:20, marshallmattah
Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?
Answers: 2
Physics, 22.06.2019 21:00, rina62
On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?
Answers: 3
Please help really desperate as it is due in a couple of hours.
A cricket ball is hit from a poin...
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