10. On Earth, a ball is dropped and falls 2.0 m in a vacuum. The acceleration of the ball at 1.0 m is 10 m / s2. 0 m The Ball is right here 0.5 m
Fisika
nickjeremy
Pertanyaan
10. On Earth, a ball is dropped and falls 2.0 m in a vacuum.
The acceleration of the ball at 1.0 m is 10 m / s2.
0 m The Ball is right here
0.5 m goes down
1.0 m
1.5 m
2.0 m
What is the acceleration of the ball at 0.5 m?
A 5.0 m / s2 B 10 m / s2 C 15 m / s2 D 20 m / s2
The acceleration of the ball at 1.0 m is 10 m / s2.
0 m The Ball is right here
0.5 m goes down
1.0 m
1.5 m
2.0 m
What is the acceleration of the ball at 0.5 m?
A 5.0 m / s2 B 10 m / s2 C 15 m / s2 D 20 m / s2
11. A skydiver reaches terminal velocity. Then he opens his parachute.
What happens to the skydiver as the parachute opens?
A There is a decrease in weight.
B There is acceleration upwards.
C There is an increase in speed.
D There is movement upwards.
1 Jawaban
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1. Jawaban Kristopher
I don't know the answer of number 10
11. B.According to Newton's third law, the parachutist will accelerate in the upwards direction. This does not mean he will move in the upwards direction. The parachutist is moving rapidly downwards before he opens the parachute, and acceleration upwards really is the same thing as deceleration downwards -- he just slows down.