The main danger is vehicles making u-turns or pulling out without signalling.
Answer:
The magnitude of the rate of change of the child's momentum is 794.11 N.
Explanation:
Given that,
Mass of child = 27 kg
Speed of child in horizontal = 10 m/s
Length = 3.40 m
There is a rate of change of the perpendicular component of momentum.
Centripetal force acts always towards the center.
We need to calculate the magnitude of the rate of change of the child's momentum
Using formula of momentum


Put the value into the formula


Hence, The magnitude of the rate of change of the child's momentum is 794.11 N.
Answer:
Bacteria and Parasites from Sewage. If sewage is improperly treated it can contaminate water with a variety of bacteria and other parasites.
Industrial Waste. ..
Fertilizer and Lawn Chemicals. ...
Silt and Soil. ...
Humans and Water Pollution Through Detergents. ...
Petrochemicals Contribute to Water Pollution.
Explanation:
Answer:
T = 3990 N
Explanation:
The free body diagram for the elevator consists of a tension force pointing up, and its weight pointing down. So the elevator's net force is:
F = T - 2940N
ad at the same time, using Newton's second law, we have that this net force should equal the elevator's mass (300 kg) times its acceleration (a):
T - 2940N = 300kg (3.5m/s^2)
then
T = 2940 N + 1050 N
T = 3990 N