8. The tree branch in the previous problem sags, and the
child's feet rest on the ground. If the tension in the
rope is reduced to 220 N,
what is the value of the
normal force being exerted on
the child's feet?
A. 2.2 x 102N
C. 4.3x 102N
B. 2.5x 102 N
D. 6.9 x 102N

The potential in a region between x = 0 and x = 6.00 m is v = a + bx, where a = 14.0 v and b = -7.30 v/m.

Find the volume of the ellipsoid x^2+y^2+5z^2=36.

Abaseball picther can throw a ball at about 90 miles per hour, v = 40 m/s, on solid rock ground. we now put him into space. when he throws the ball, which weighs mb = 0.15 kg moves away from himat the same speed. how long does it take the ball thrown in space to travel the 30 meters to the batter? he weighs mp = 100kg