Answer:
Explanation:
Let hockey puck is moving at constant speed v
so here we have
so time taken by the puck to strike the wall is given as
now time taken by sound to come back at the position of shooter is given as
so we know that total time is 1.9 s
now we have
So you subtract the numbers that are on the same axis. So if your gravitational force is 10 and your normal force is 5 you do 5-10 to get -5 since gravity acts downward
Answer:
(a)
(b)
(c)
(d) = 22.41 m/s; = 189.92 m/s
(e) average velocity = (9i-21j-5) m/s
Explanation:
For the given problem:
(a) The velocity as a function of time: v(t) = dr/dt. Thus:
(b) The acceleration as a function of time: a(t) = dv/dt. Thus:
(c) The particle velocity at t= 2.0s. Using the equation in part (a);
(d) Its speed at t=1.0s and t=3.0s
at t=1.0s
= 22.41 m/s
at t= 3.0s
= 189.92 m/s
(e) The average velocity between t = 1.0 s and t = 2.0 s. Using the equation for r(t).
m
average velocity = Δr/Δt = (r2-r1)/(t2-t1) = (9i-21j-5) m/s
Answer:
It looks like a total of 9 meters
Explanation:
the dot on the graph for 1910 sits JUST below the mark for 10 meters
The statement is true. gpe= m x g x h