Wesley pushed a tennis ball down a long driveway in 2.5s. The ball traveled at a constant acceleration of 1.8 m/s2 down the slope and was traveling at a velocity of 7.6 m/s by the time it reached the street at the end of the driveway. How fast was the ball going when it left Wesley's hand?
A. 14.5 m/s
B. 3.1 m/s
C. -0.5 m/s
D. 12.1 m/s

Will a heavier bowling ball hit pins better than a lighter bsll

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.