Answer:
11.0 kg m/s
Explanation:
The impulse exerted on the cart is equal to its change in momentum:

where
m = 5.0 kg is the mass of the cart
is its change in speed
Substituting numbers into the equation, we find

Answer:
What does ur question mean can u explain me
Answer:
a. 2.0secs
b. 20.4m
c. 4.0secs
d. 141.2m
e. 40m/s, ∅= -30°
Explanation:
The following Data are giving
Initial speed U=40m/s
angle of elevation,∅=30°
a. the expression for the time to attain the maximum height is expressed as

where g is the acceleration due to gravity, and the value is 9.81m/s if we substitute values we arrive at

b. the expression for the maximum height is expressed as

c. The time to hit the ground is the total time of flight which is twice the time to reach the maximum height ,
Hence T=2t
T=2*2.0
T=4.0secs
d. The range of the projectile is expressed as

e. The landing speed is the same as the initial projected speed but in opposite direction
Hence the landing speed is 40m/s at angle of -30°
Answer:
See the answer below
Explanation:
The two correct options are:
1. <em>The student traveled the fastest between 4 and 5 minutes</em>
<em>2. The average speed of the student is 4 meters per minute</em>
Between 4 and 5 minutes, the approximate distance of 7 meters covered by the student is the longest of all the distances covered per minute. Since speed is a measure of distance covered relative to time, <u>it means that the student traveled the fastest between these periods.</u>
<em>The average speed is calculated by dividing the total distance traveled by a body by the total time taken to cover the distance. </em>
From the graph:
Total distance covered = 20
Total time taken = 5
Average speed = 20/5 = 4 meters per minute
<em>All the remaining conclusions are incorrect or indeterminate going by the information on the graph.</em>