Why is a projectile launched horizontally identical to that of a dropped object?
a. There is no initial velocity.
b. The initial velocity is uniform.
c. The initial velocity increases as it moves downward.
d. The initial velocity decreases as it moves downward.
A ball is hit 450with the horizontal. At what point in its trajectory does this projectile have the least speed?
a. Just after it is launched
b. Just before it hits the ground
c. At the highest point of its flight
d. Halfway between the ground and the highest point
A driver using his pick up loses its break while already heading on a concrete wall but tries his best to bring the car to the pile of haystack along the road. Why does colliding on the pile of hay stack cause less damage on the car than when colliding with the concrete wall?
a. The change in momentum is less.
b. The change in momentum is greater.
c. The time interval for stopping is less.
d. The time interval for stopping is greater.
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Answer:
1.c Maybe?
2.b
3.c or a maybe