Answer:
(a) 10 s
(b) 30 m/s
(c) 150 m
Explanation:
The motorist's position at time t is:
x = 15t
The officer's position at time t is:
x = ½ (3) t² = 1.5 t²
(a) When they have the same position, the time is:
15t = 1.5 t²
t = 0 or 10 s
(b) The officer's speed is:
v = 3t
v = 30 m/s
(c) The position is:
x = 15t = 150 m
Answer:
False
Explanation:
A basketball sitting on a horizontal surface will experience static friction which prevents it from moving. Static friction is higher than when the ball and surface are in motion relative to each other. Objects that are resting on horizontal surface experience static friction which gives way to kinetic friction where the two objects, the surface and the object at rest, move relative to each other. The statement in the question is incorrect.
Answer:
Explanation:
The football players collide in a completely inelastic collision, in other words they have the same velocity after the collision, this velocity has a magnitude V=1.6m/s.
We need to use the conservation of momentum Law, the total momentum is the same before and after the collision, at the initial point the receiver does not have any speed
(1)
We solve in order to find the receiver mass:
Answer:
are nearby and bright i hope this helps