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A ball is thrown straight up. At the top of its pat hits instantaneous speed is

A. 0 m/s

Suppose u r in a car that is going around a curve the speedometer reads a constant 30 miles per hour which of the following is NOT true

C. Your velocity is constant

When a basketball player jumps to make a shot once the feet are off the floor the jumpers acceleration

E. Is g no more no less

A car accelerates uniformly from 3.0 /s to 12 m/s in 4.5 s the magnitude of the acceleration is?

A. 2.0 m/s/s

Suppose a car is moving in a straight line and steadily increases speed. It moves from 35 km/h to 40km/h the first second and 40km/h to 45 km/h the next second. What is the cars acceleration

A. 5 km/h*s

The area under a velocity time graph represents

A. Displacement

The hang time (time ones feet are off the ground in a jump) for most athletes is

A. Less than one second

If u drop a feather and a coin at the same time in a vacuum tube-which will reach the bottom of the tube first?

A. Neither they will both reach the bottom at the same time

Even though a car is slowing down it is accelerating in the most general definition of acceleration... True or false

A. True

As an object falls freely in a vacuum its...

A. Velocity increases

In the absence of air resistance objects fall at a constant...

Acceleration

A freely falling object starts from rest. After falling for 1 s it will have a speed of about

B. 10 m/s

A car accelerates at 2 m/s/s. Assuming the car starts from rest how much time does it need to accelerate to a speed of 20 m/s

B. 10 seconds

A runner travels 60 m at a steady speed of 5 m/s the time taken is

B. 12 s

If a projectile is fired stright up at a speed of 30 m/s the total time to return to its starting position is about

B. 6 seconds (3 seconds up 3 down)

Suppose u take a trip that covers 180 km and takes 3 hours to make. Ur average speed is

B. 60 km/hr

Suppose an object is in free fall each second the object falls...

B. A larger distance than the second b4

If a freely falling object were somehow equipped with a speedometer its speed reading would increase each second by

B. About 10 m/s

A ball is thrown into the air at the highest point the ball has a zero velocity and zero acceleration... True or false

B. False

A unit of acceleration is meters per second... True or false

B. False

Average speed is defined as the time it takes for a trip divided by the distance... True or false

B. False

The acceleration due to gravity on the earth is approximately

C. -10 m/s/s

A body falls freely from rest near the surface of the earth. The distance the object falls in 2 s is

C. -20 m

Mr. Vining is looking at a new garden Appartment in downtown scottsdale and is out on the balcony and he decides to find out how far up he is. He takes out a water ballon and drops it off the railing. If it takes 3s to hit the ground, how far is the found beneath him?

C. -45 m

The vertical height attained by a basketball player who achieves the hang time of a full second is about

C. 1.2 meters

A car starts from rest and after 7 seconds it is moving at 42 m/s what is the cars average acceleration

C. 6 m/s/s

A freely falling object starts from rest. After falling for 6 s it would have the speed of about

C. 60m/s

When something falls to the ground it accelerates. This acceleration is called the acceleration due to gravity and is symbolized by the letter g. What is the value of g on earths surface

C. About 10 m/s/s

A ball is thrown straight up. At the top of its path its acceleration is

C. About 10m/s/s

If u drop a feather and a coin at the same time in a tube filled with air which will reach the bottom of the tube first

C. The coin (it has air)

Which of the following statements correctly describes the motion of an object depicted by the postition vs. time graph below

C. The object has a constant velocity

A ball is thrown upwards and caught when it comes back down in the absence of air resistance the speed of the ball the instance before it is caught would be..

C. The same as the speed it had when thrown upwards

On a position vs. time graph the slope of the line represents the

C. Velocity

If a car at a constant average speed of 60 km/h how long does it take to travel 12 km

D. 0.2 hours

Mr. Vining sees mr. Hill under his balcony mr. Vining drops a water balloon that falls freely for 2 s before striking mr. Hill on the head. How far did the ballon travel before striking him?

D. 20 m

Consider the following graph. The average speed is greatest during which time interval

D. 8s-10s

One possible unit for speed is

D. All of the above

Speed is

D. All of the above

Consider drops of water leaking from a water faucet as the drops fall they

D. Both a and b A. Remain at a relatively fixed distance from each other B. Get farther apart

When you look at the pedometer in a moving car, u c the cars

D. Instantaneous speed

Which of the following is NOT and acceleration unit?

D. Km/s

Acceleration is defined as the CHANGE in

D. Velocity divided by the time interval

Suppose a jumper claims a hang time of 2 s then that jumper must be able to jump the vertical distance of

E. 5 m