The graph below shows the relationship between speed and time for two objects, A and B. Compare with the acceleration of object
B, the acceleration of object A is
A. Greater
B. The same
C. Lesser
D. One-third as less
A. Greater
B. The same
C. Lesser
D. One-third as less
2 answers:
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Answer:
-14 kg m/s
Explanation:
Taking the direction "to the left" as positive direction, the initial momentum of the ball is
p1 = +8 kg m/s
while the final momentum is
p2 = -6 kg m/s
so the change in momentum is
According to the impulse theorem, the impulse exerted on the ball is equal to the change in momentum of the ball, so:
(which means 14 kg m/s to the right)
While the impulse that the ball exerted on the ball is equal and opposite in direction, so:
(which means towards the left)
Answer:
Explanation:
The concept of elastic and inelastic demand is applied.
for an elastic demand, the elasticity must be greater than 1 and for an Inelastic demand, the elasticity must be less than 1.
The steps and appropriate calculation is as shown in the attached file.
