7. A car is travelling along a road at 30 ms when a pedestrian steps into the road 55 m ahead. The driver of the car applies the brakes after a reaction time of 0.5 s and the car slows down at a rate of
10 ms. What happens?

Car collide with man

Explanation:

Given

Speed of car is

Distance of the man from the car is

Reaction time

Rate of deceleration

Distance traveled in the reaction time

Net effective distance to cover

Distance required to stop the car

Require distance is more than that of net effective distance. Hence, car collides with the man.

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.

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.