Answer:
0
Explanation:
The formula for finding acceleration is a = v/t (velocity/time)
so first we must find the velocity
the formula for finding velocity is v = d/t (displacement/time)
and speed is the distance traveled/time
so you must find the distance traveled
the circumference of a circle with a radius of 2cm is 12.57
and the body of mass traveled this circle 3 times
so 12.57 times 3 is 37.71
so that was the total distance traveled, and this was completed in three seconds
so s = 37.71/3 which is just 12.57 = 37.71/3
if we assume that these circles began and ended in the same place, that would make the displacement of the body of mass 0
so v=d/t v=0/3 0=0/3
meaning a=0/3 0=0/3
Answer:
306.12N/m^2
Explanation:
Mass = 30 kg
g = 9.8m/s2
F = mg
F = 30 x 9.8
F = 294N
L = 0.98m
Since the stilts is square, then the area is L^2
A = L^2
A = 0.98^2
A = 0.9604m^2
P =?
P = F/A
P = 294/0.9604
P = 306.12N/m^2
The pressure exerted by the man is 306.12N/m^2
Answer:
a) 20 m/s
b) 37.5 m)s
Explanation:
Average speed = total distance ÷ total time
=> (a) average speed of a car that travels 400m in 20s
= 400/20 = 20 m/s
& (b) average speed of an athlete who runs 1500m in 4 minutes (or 4×60=240 seconds)
= 1500/240 = 37.5 m/s
Answer:
0.98 J
Explanation:
Use the formula KE=1/2mv² to get the answer .98 J
I would feel warm because putting cold and hot together is gonna be warm because with the cold it is cooling down the hot to make warm