A ball thrown into the air follows a parabolic trajectory. At the highest point in the trajectory
A. both the velocity and the acceleration are zero.
B. the velocity is zero, but the acceleration is not zero.
C. neither the acceleration nor the velocity are zero.
D. the acceleration is zero but the velocity is not zero.
C. neither the acceleration nor the velocity are zero.
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Website administrators relay on ______, which is data such as the number of users who commented on, shared, viewed, or liked webpage content.
A. analytics B. benchmarking C. cookies D. hits
Neglecting air resistance, a bullet fired straight down from the top of a high cliff has an acceleration of
A) less than 10 m/s2. B) 10 m/s2. C) more than 10 m/s2. D) depends on the height of the cliff.
What is the approximate range of masses that newborn main-sequence stars can have?
A) 0.001 to 150 solar masses B) 0.1 to 1,000 solar masses C) 0.1 to 150 solar masses D) 0.001 to 10 solar masses E) 0.1 to 10 solar masses
A ball is pushed downhill with an initial velocity of 3.0 m/s. The ball rolls down a hill with a constant acceleration of 1.6 m/s2 . The ball reaches the bottom of the hill in 6.0 s. What is the ball's velocity at the bottom of the hill?
a. 10 m/s b. 13 m/s c. 16 m/s d. 17 m/s