An investigation using a fan and a wooden car is shown. which of the following actions will most likely increase the distance the car will travel?
a. increase the speed of the fan
b. add mass to the car
c. decrease the speed of the fan
d. change the direction the car is going.
explain why you choose the answer you did.

Which material produces static charge when rubbed?

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

What is the measure of a change in an objects velocity?