Explanation:
velocity = 15 km/hr = 15×1000m / 60×60s
= 4.17 m/s
time= 20 min= 20 × 60s
= 1200s
displacement =?
we know that,
V = D / t
or, 4.17 = D / 1200
or, D = 4.17 × 1200
or,D = 5004 m
Answer:
N = 3600 N
Explanation:
centripetal acceleration requirement is
ac = v²/r = 20²/50 = 8 m/s²
As the only available acceleration is gravity, centripetal acceleration must come from that,
This makes the "weight" that the road senses and must counteract
N = m(g - ac)
N = 2000(9.8 - 8)
N = 3600 N
The impact of the heavy stone would produce waves with a higher amplitude because the stone would pick up more speed while falling.
For the student box thing I believe it was the grass or carpet I hope this helps a little
