6. if a person pushes a cart with a force of 40
n and it accelerates at 0.5 m/s2, what is the
mass of the cart?
a. 80n
b. 80 kg
c. 20 n
d. 20 kg

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y