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Question 2
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Sunny and Sanjeev start simultaneously from
A to B with their respective speeds in the ratio
of 5. 4. After travelling one-fifth of the total
distance, Sanjeev triples his speed and travels
for some more time, following which, he again
changes his speed and completes the rest of the
journey. Sunny, however maintains his initial speed
throughout the journey. If both Sunny and Sanjeev
reach B at the same time, and the time for which
Sanjeev travelled at thrice his initial speed was
one-fourth of his total time of travel, then find the
ratio of the respective speeds with which Sunny
and Sanjeev reach B​

Answer 1

Answer:

A roller coaster car loaded with passengers, has a mass of 500 kg; the radius of curvature of the track at the bottom point of a dip is 12 m. The vehicle has a speed of 18 m/s at this point.

In the space below, draw a free-body diagram for the car (label forces according to type).

Calculate the acceleration and the net force acting upon the car. PSYW

Calculate the force exerted on the vehicle by the track? PSYW