<span>the same amount of work being done over a longer period of time.</span>
Answer:
u = 449 m/s
Explanation:
Given,
Mass of the bullet, m = 26 g
Mass of the wooden block,M = 4.7 Kg
height of the block,h = 0.31 m
initial speed of the block, u = ?
Using conservation of energy




v = 2.47 m/s
Now, using conservation of momentum to calculate the speed of the bullet.
m u + M u' = (M+m)v
m u = (M+m)v
0.026 x u = (4.7+0.026) x 2.47
u = 449 m/s
Hence, the speed of the bullet is equal to 449 m/s.
Answer:
V = V0 + a t
V = 75 - 9.8 * 3 = 45.6 m/s
Answer:
C: in between infrared and ultraviolet light
Explanation:
the colors are
V - violet
I - indigo
B - blue
G - green
Y - yellow
O - orange
R - red