If the speed of an object in uniform circular motion is

What is necessary to designate a position? (2.1) (a) fundamental units (b) motion (c) a direction (d) a reference point

Which one of the following describes an object in motion? (2.1) (a) A period of time has passed. (b) Its position is known. (c) It is continuously changing position. (d) It has reached its final position.

Which one of the following is always true about the magnitude of a displacement? (2.2) (a) It is greater than the distance traveled. (b) It is equal to the distance traveled. (c) It is less than the distance traveled. (d) It is less than or equal to the distance traveled.

"Distance is to displacement as ___. (2.2) (a) centimeters is to meters (b) a vector is to a scalar (c) speed is to velocity (d) distance is to time"

Acceleration may result from what? (2.3) (a) an increase in speed (b) a decrease in speed (c) a change in direction (d) all of the preceding

For a constant linear acceleration, what changes uniformly? (2.3) (a) acceleration (b) velocity (c) distance (d) displacement

Which one of the following is true for a deceleration? (2.3) (a) The velocity remains constant. (b) The acceleration is negative. (c) The acceleration is in the direction opposite to the velocity. (d) The acceleration is zero.

Which is true for an object in free fall? (2.3) (a) It has frictional effects. (b) It has a constant velocity. (c) It has a constant displacement. (d) It increases in distance proportionally to t2.

If the speed of an object in uniform circular motion is tripled and the radial distance remains constant, then the magnitude of the centripetal acceleration increases by what factor? (2.4) (a) 2 (b) 3 (c) 4 (d) 9

Neglecting air resistance, which of the following is true for a ball thrown at an angle u to the horizontal? (2.5) (a) It has a constant velocity in the 1x direction. (b) It has a constant acceleration in the 2y direction. (c) It has a changing velocity in the 1y direction. (d) All of the preceding are true.

In the absence of air resistance, a projectile launched at an angle of 288 above the horizontal will have the same range as a projectile launched at which of the following angles? (2.5) (a) 458 (b) 578 (c) 628 (d) 1808 2 338 5 1478

A football is thrown on a long pass. Compared to the balls initial horizontal velocity, the velocity at the highest point is ___. (2.5) (a) greater (b) less (c) the same