<span>Radiant energy travels in straight lines until it strikes an object where it can be absorbed, reflected or transmitted</span>
Assuming north as positive direction, the initial and final velocities of the ball are:
(with negative sign since it is due south)
the time taken is
, so the average acceleration of the ball is given by
And the positive sign tells us the direction of the acceleration is north.
1. D
2. A
I’m not sure on 3
Answer:h=19.4 m
Explanation:
Given
mass of automobile
Initial height of automobile
Velocity at this instant
If the car stops somewhere at a height
Thus conserving total energy we get