Answer:
Explanation:
Work can be found by multiplying the force by the distance.
The force is 100 Newtons and the distance is 5 meters. Therefore,
We can substitute the values into the formula.
Multiply.
- 1 Newton meter is equal to 1 Joule.
- Thus, our answer of 500 Newton meters is equal to 500 Joules.
You did <u>500 Joules </u>of work to push a shopping cart 5 meters with a force of 100 Newtons.
Answer:
horizontal velocity vh = 6*cos(30°) = 6*(√3)/2 = 3√3 m/s
initial vertical velocity vv = 6*sin(30°) = 6/2 = 3m/s
Using s = ut + at2/2 for change in vertical distance in time t, with acceleration a (-9.8m/s2) and initial velocity u (vv = 3m/s) we have
0 = 3*t - 9.8*t2/2 or t = 6/9.8 s (ignoring the t = 0 solution, which just represents staying still!).
The horizontal distance in time t is vh*t or 3√3*6/9.8 m
Explanation:
The total momentum before and after the collision must be conserved.
The total momentum before the collision is:
where m1 and m2 are the masses of the two players, and
and
their initial velocities. Both are considered with positive sign, because the two players are running toward the same direction.
The final momentum is instead
because now the two players are moving together with a total mass of (m1+m2) and final speed vf.
By requiring that the momentum is conserved
we can calculate vf, the post-collision speed:
and the direction is the same as the direction of the players before the collision.
Answer:
Use your curtains. ...
Use timers on your central heating. ...
Move your sofa. ...
Maximise your insulation. ...
Wrap up warm. ...
Turn down the dial. ...
Block out the draughts. ...
Install thermostatic radiator valves.
Net force is 5000 - 1000 = 4000 N
F = ma
4000 = 200a
a = 20 m/s^2