The roller coaster car reaches point A of the loop with speed of 20 m/s, which is increasing at the rate of 5 m/s2. Determine the magnitude of the acceleration at A if pA

Answer and Explanation:

Data provided as per the question is as follows

Speed at point A = 20 m/s

Acceleration at point C =

The calculation of the magnitude of the acceleration at A is shown below:-

Centripetal acceleration is

now we will put the values into the above formula

=

After solving the above equation we will get

Tangential acceleration is

d. air pressure decreases as altitude increases.