Answer:
s = 11.78 m
Explanation:
given,
acceleration due to gravity, g = 3.77 m/s²
mass of the rock = 15 g
time = 2.5 s
distance traveled = ?
using equation of motion
initial speed = 0 m/s
s = 11.78 m
distance traveled by the rock is equal to 11.78 m.
Answer:
Given:
Initial velocity of the asteroid, v = 19.9 km/s = 19900 m/s
(since, 1km = 1000 m)
Final velocity of the asteroid, v' = - 18.3 km/s = -18300 m/s
time period, T = 1.97 years
Solution:
(a). Total change in velocity, :
= v' - v
= - 18300 - 19900 = - 38200 m
here, negative sign is indicative of the fact that the motion of the asteroid is in the downward direction.
(b) Asteroid's average acceleration, a:
a =
a =
a =
Here, the negative sign is the indication of deceleration of the asteroid in the downward direction.
A. Helps them find food, is the correct answer.
Essentially, animals need to move for survival. They need them to hunt and catch prey. It also helps them to quickly escape animals and find shelter. Hope this helps :) Let me know if you have any other questions related to this problem!
Answer:
0.08
Explanation:
Length the impulse has to travel i.e., the length of the nerve cell connecting the spinal cord to your feet = 1.2 m
Speed at which the impulse travels in the nerve cell = 15 m/s
Time = Distance / Speed
∴ Time taken by the impulse to travel the distance from the nerve cell connecting the spinal cord to your feet is 0.08 seconds
The heaviest ball will have the most Potential Energy loss and Kinetic Energy gain, so your answer should be D