Kinetic friction always opposes the motion of an object. True False

In the Atkinson and Shiffrin modal model information can be lost by both decay and interference at each stage. True False

Which object has the most inertia? ping pong ball feather bowling ball

8. What factor determines if lightning bolts are classified as hot or cold? A. lightning's temperature B. lightning's brightness C. likelihood of starting a fire D. amount of heat given off

4. What is the voltage drop across a shorted parallel component in a series-parallel circuit? A Zero volts B The applied voltage It depends on total current D It depends on total resistance

A stabilized spin is not different from a stall in any element other than Speed Rotation G force

A rock thrown vertically upward from the surface of the moon at a velocity of $16m/sec$ reaches a height of $s=16t-0.8t^{2}$ meters in t sec. a. Find the rock's velocity and acceleration at time t. b. How long does it take the rock to reach its highest point? c. How high does the rock go? d. How long does it take the rock to reach half its maximum height? e. How long is the rock aloft? a. Find the rock's velocity at time t. $v=16-1.6tm/s$ Find the rock's acceleration at time t. $a=\square m/s^{2}$ (Simplify your answer. Use integers or decimals for any numbers in the expression.)

A weightlifter lifts an 120-kg barbell at a height of 2.4 meters above the ground. If it took 2.8 seconds to complete this lift, what was the weightlifter's power output in watts? Round to the nearest integer. $\square $

What is the value of the normal force if the coefficient of kinetic friction is 0.22 and the kinetic frictional force is 40 newtons? A. 8.8 newtons B. 40 newtons C. 80 newtons D. $1.8\times 10^{2}$ 8 x 10 newtons

What type of evidence would a UV light be used to detect? DNA only Firearms residue Latent prints or bodily fluids Bullet trajectories

What model states that particles of matter are always in motion?