Physics, 02.12.2019 22:20 paigejohnson955
Aball is thrown straight up. what are the velocity and acceleration of the ball at the highest point in its path?
a. v = 9.8 m/s up, a = 0.
b. v = 0, a = 9.8 m/s2 down.
c. v = 0, a = 9.8 m/s2 up.
d. v = 9.8 m/s down, a = 0.
e. v = 0, a = 0.
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-- from january 15 to february 6 is a period of 22 days.
-- the period of the full cycle of moon phases is 29.53 days.
-- so those dates represent (22/29.53) = 74.5% of a full cycle of phases.
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these are the correct answers. i couldn't get the rest of the answers
pitch is the perceived frequency of a sound wave.
explanation :
using the law of conservation of energy
when two cars collide with each other then the momentum is same before collision and after collision but energy is changed after collision in form of heat and sound.
we know this collision is inelastic collision.
in inelastic collision, when two objects collide with each other then the momentum is conserved but kinetic energy is not conserved.
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