Which statement supports the principle of moments? a.
A large force at a short distance from a fulcrum can be overcome by a small force at a small distance from the fulcrum.
c.
Both a and b.
b.
Equilibrium can be attained when the sum of the moments of the forces acting in a clockwise direction is greater to the sum of the moments of the forces acting in a counterclockwise direction.
d.
None of the above.

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?

Acar travels 40m in 8 seconds find the car speed