Question

A toy car that is traveling on a horizontal dock with a speed of 3.00 m/s when it comes to the end of the dock and proceeds to fall into the lake below.

1) The toy car splashes in the lake below 0.639 seconds later. How high above the water is the dock?

a) 0.639 m, b) 1.00 m, c) 2.00 m, d) 4.00 m, or e) 6.26 m

2) If the car had been dropped from rest at the dock's edge, it would take

a) a longer,

b) a shorter,

c) the same amount of time to reach the water below.

The dropped car reaches the water with

a) a greater,

b) a lesser,

c) the same speed as the rolled ball.

Ultimately the dropped car underwent a greater displacement. ----- T or F

Both cars accelerate in the vertical direction throughout their trajectories. ----- T or F

The magnitude of v_x for the car initially traveling with a speed of 3.00 m/s is 3.00 m/s just before reaching the water.  ----- T or F

What is the speed of the dropped car just before splashing in the water?

a) 1.50 m/s,

b) 3.00 m/s,

c) 3.13 m/s,

c) 6.26 m/s

Answer 1