Answer:
a) 
, b) 
Explanation:
The problem is asking the rocket velocity and acceleration at t = 6 s.
a) The general equation of the rocket is:
b) The acceleration experimented by the rocket is:
Average speed = (total distance covered) / (time to cover the distance)
= (50 miles) / (1.5 hours)
= (50/1.5) miles/hours
= (33 and 1/3) mph .
We don't care about all that other "data" given earlier in the question.
We only need to know the total distance covered and the time it took
to cover the distance.
Answer:
Explanation:
From the question we are told that:
Length 
Width 
Velocity of Car A 
Velocity of Car B 
Distance traveled by car A before car B moves
Therefore total distance traveled at same time interval
Where
Total distance=Perimeter of rectangle
Therefore
Generally the equation for time taken to meet is mathematically given by
Where
Relative speed = Speed of car A +Speed of car B
Therefore the time taken to meet
Answer:
Explanation:
(a) When the plate starts to spin:
Its angular velocity increases, so the angular acceleration is non zero. As the direction of velocity keeps on changing every instant so the linear acceleration is also non zero.
(b) When the plate rotates at constant angular velocity:
Its angular velocity is constant so the angular acceleration is zero. As the direction of velocity keeps on changing every instant so the linear acceleration is also non zero.
(c) When the plate sows to halt:
Its angular velocity decreases, so the angular acceleration is non zero( but negative). As the direction of velocity keeps on changing every instant so the linear acceleration is also non zero.
