Abasketball player hits a baseball which just clears a 7.50 m high, located 90.0 m away from home plate. if the ball was hit 1.0 m of the ground at an angle 35 degree, what was the initial speed of the baseball?

Let be the initial velocity of the ball. Then it has components

The position vector of the ball at time has components

where is the acceleration due to gravity. When the ball is 90.0 m away from home plate, we're told that it clears (presumably) a barrier of some kind that is 7.50 m tall, so that for some time we get

Solving for this gives

Substituting this into the second equation gives

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg