just x
A ball rolls on a frictionless surface. The initial velocity is 16 m/s. What is the velocity 5 seconds later?
16 m/s
A bowling ball and a golf ball are dropped at the same time from the same height. Which one hits the ground first?
Both hit at the same time!
Two object start at the same height. One object is launched horizontally at 100 m/s. The other object drops straight down from rest. Which object will hit the ground first?
The same time.
A ball rolls on a frictionless surface. The initial velocity is 16 m/s. What is the acceleration of the ball?
0 m/s/s
What is the acceleration of gravity?
-10 m/s/s
45 degrees
A ball rolls on a frictionless surface. The initial velocity is 16 m/s. What is the change in velocity at t=15s?
0 m/s
An object is thrown straight up. At the highest point, what is the acceleration of the object?
-10 m/s/s
A boat drives 2 m/s due north across a river that flows east at 1 m/s. If the speed of the river doubles, how will that change the time it takes the boat to cross the river?
Will not change the time!
A ball rolls to a stop while moving to the right. Describe the direction of the velocity and the direction of the acceleration.
velocity is to the right
acceleration is to the left
A text book is dropped from the top of a cliff. It starts at rest. How fast is it moving 2.4 seconds after it is dropped?
24 m/s down
A boat drives 2 m/s due north across a river that flows east at 1 m/s. If the speed of the river doubles, how will that change the eastern displacement of the boat?
Twice as far.
A ball starts at rest and accelerates at 4 m/s/s. How far does the ball travel in 1 second?
2 meters
A text book is dropped from the top of a cliff. It starts at rest. How far has is it dropped 2.4 seconds after it is dropped?
28.8 meters
Two object start at the same height. Object A is launched horizontally at 100 m/s. Object B drops straight down from rest and hits the ground 1 second later. How far does object A travel horizontally before hitting the ground?
100 meters