A jeep starts from rest. If its velocity becomes 72 km/hr in 4 seconds. i. What is the acceleration of the jeep ?
[Ans: 5 m/s]
ii. What is the distance covered by jeep?
[Ans : 10 m]

See the answers below

Explanation:

To solve this problem we must use the following equation of kinematics.

But first we must convert the velocity from kilometers per hour to meters per second.

i)

Vf = final velocity = 20 [m/s]

Vo = initial velocity = 0 (stars from the rest)

a = acceleration [m/s²]

t = time = 4 [s]

ii)

Now we can calculate the distance with the following equation of the kinematics.

where:

x = distance covered [m]

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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no. dot product   =0 when vecs at right angles