43. What is the mass of a crate with a net force of 200N and accelerate it by 0.25m /s²?
A. 0.8 kg
B. 80 kg
C. 8 kg
D. 800 kg
44. If you exert a net force of 8 N on a 2 kg object, what will its acceleration be?
A.2m / s * 2
B. 4m / s * 2
C * 0.8m / s * 2
D. 10m / s * 2
45.You throw a ball with a mass of 1.5 kg. The ball leaves your hand at 20m / s . The ball has kinetic energy. Calculate it.
A.3000 J
B. 330 J
C. 300 J
D. 3300 J
46. What is the mass of the cart with a constant net force of 100N is exerted to accelerate from rest to a velocity of 20m / s in 5 s.
4A. 0.5 kg
B. 10 kg
C. 1 kg
D. 5 kg
47. What is the speed of sound in the air if the temperature is 27 deg * C ?
A. 357.2m / s
B. 347.2m / s
C. 337.2m / s
D. 327.2m / s
48. Peter and John are playing tug of war. Peter pulled with a force of 35 N to the right and John pull with a force of 25 N to the left. What is the net force on the rope?
A. 60 N to the right
B. 10 N to the left
C. 60 N to the left
D. 10 N to the right
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Answer:
A
A
C
B
D
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