The acceleration of a ball as it rolls down a ramp is 3 m/s2 . It starts from rest. (a) What is the ball's speed after 4 seconds? (b) How far does the ball travel during the 4 seconds?
12 m/s, 24 m
You might also like to view...
A sphere of diameter 7.9 cm is completely submerged in water and seems to weigh 32.0% less in the water than out of it
(a) What is the density of the sphere? (b) If the sphere had been twice as dense, it would have weighed what % less in water than out?
A skydiver has bailed out of his airplane at a height of 3000 m. The mass of the skydiver and his parachute is 80 kg. What is the drag (force of air resistance) when he reaches terminal speed?
A. 120 N B. 360 N C. 784 D. 750 N
Because of the great masses and speeds involved, Newton's laws are useless in measuring the mass of a galaxy
Indicate whether the statement is true or false
What wavelength (in ?m) is associated with the Paschen series for n = 4? (RH = 1.097 × 10^7 m?1)
a. 320 b. 530 c. 2.7 d. 1.9 e. 0.5