Acar starts from rest and accelerates at 4 m/s^2 for 8 s, after which it continues at constant speed for 19 s. how far would it have traveled from its starting point by that time.

The total distance traveled is 736 m

Solution:

According to the question:

Initial velocity, v = 0

(since, the car is starting from rest)

Time taken, t = 8 s

Now, the distance covered by it in 8 s is given by the second eqn of motion:

Now, to calculate the velocity, we use eqn 1 of motion:

v' = v + at

v' = 0 + 4(8) = 32 m/s

Now, the distance traveled by the car with uniform velocity of 32 m/s for t' = 19 s:

distance, d' = v't'

Total distance traveled = d + d' = 128 + 608 = 736 m

answer: he got 23

explanation:

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.