Answer:
Explanation:
The train travels 5 miles in the east and then 2 miles in the west . Total path length is equal to 5 + 2 = 7 miles . But the displacement is (5 - 2 ) = 3 miles . So displacement ≠ path length
The jogger is running around a circular path . In moving one round on a circular path , path length is equal to the circumference of the circle but the displacement is zero because the starting point and finish point is same.
For the ball rolling down an inclined plane , path length is length of inclined path traveled and displacement is also the same . so in this case path length equals displacement.
For a ball thrown upwards and going downwards , total path length is equal to the total of path gone up and down or twice the height but the displacement is nil if the ball comes back again in the hand.
Answer:
speed is -20.0155 m/s
and direction is downward
Explanation:
given data
mass of rocket = 1500 kg
rocket accelerates upward = 10 m/s²
time t = 2 s
maximum height = 530 m
to find out
speed and direction of the heavier fragment just after the explosion
solution
we use here principle of conservation of momentum that is
Mt Vt=M1 V1 + M2 V2 ................1
so here
first we find the initial velocity that is express as
v = a × t .....................2
v = 10 × 2
v = 20 m/s
and distance S
S =u × t + 0.5 × a × t² ...................3
S = 0 + 0.5 × 10 × 2²
S = 20 m
and now we find speed of the lighter piece that is
v² = v1² + 2 × a × S .................4
0 = v1² + 2 × -9.81 × (530-20)
v1² = 10006.2
v1 = 100.031 m/s
so now put all these in equation 1 we get
Mt Vt = M1 V1 + M2 V2
1500 × 20 = (1500 × 1/3 ) × 100.031 + (1500 × 2/3) + V2
30000 = 50015.5 + 1000 V2
V2 = -20.0155 m/s
so speed is -20.0155 m/s
that mean vertical component of second fragment will be move downward
Answer:
Art
Explanation:
Polly's line is linear, while arts line is going up with constant velocity. There for art is going faster.
Answer:A Quiet Place is a 2018 American horror film directed by and starring John Krasinski. Written by ... Four-year-old Beau is drawn to a battery-powered space shuttle toy, but Lee takes it away due ... Beau activates the toy when the family is walking home while crossing a bridge, giving away his location to a nearby creature that .
Explanation:
Answer:
<em>Refraction is the change in direction of waves that occurs when waves travel from one medium to another. ... Diffraction is the bending of waves around obstacles and openings. The amount of diffraction increases with increasing wavelength.</em>