You throw a ball up in the air and hold your hand under it to catch it when it comes down. The reason why the ball stops is because
a. your hand is there: your hand exerts no force on the ball.
b. your hand exerts a force on the ball perpendicular to its velocity.
c. your hand exerts a force on the ball in the direction of its velocity.
d. your hand exerts a force on the ball in the direction opposite to its velocity.
e. your hand and the ball exert forces in the same direction on each other.
d
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Resolving power is measured in nanometers
a. True b. False Indicate whether the statement is true or false
You roll a ball off a table and at the same time drop a second ball straight down from the edge of table. The second ball reaches the ground ____________ the first ball reaches the ground
a. before b. at the same time that c. after d. before or after, depending on the masses, e. cannot be determined
Three resistors,
are connected in parallel to a 9.00 V battery. What is the total power dissipated in the circuit?
A. 180 W B. 117 W C. 99.0 W D. 80.1 W E. 18.0 W
A bicycle that travels four as fast as another when braking to a stop will skid
A) twice as far. B) four times as far. C) eight times as far D) sixteen times as far. E) depends on the mass of the bike