A1200.0 kg elevator is resting on the bottom floor and is being pulled upward by a cable (but is not moving). if the tension in the cable is 5240 n, what is the magnitude of the normal force acting on the elevator? a. 5240 n b. 4040 n с, 6520 n d. 11800 n 15. how much momentum does a 25 kg child have that is moving at 1 km/h? a. 174 kg m/s b. 6.94 kg'm/s c, 25.0 kg. m/s d. 12.5 kg m/s 16. a 5.40 kg block is placed on a ramp which is inclined at 32.0°, and begins sliding down. the coefficient of friction between the ramp and the block is 0.230. what is the magnitude of the block's acceleration? a. 3.28 m/s2 b. 1.91 m/s2 c. 7.10 m/s2 d. 5.19 m/s2 17. the force of gravity between two 5.00 kg objects is 5.70 x10-7 n. what is the distance between these objects? a. 2.42 m b. 0.0541 m c. 0.0242 m d. 5.41 m 18. a coin is thrown vertically upward with velocity 24.5 m/s at the edge of a cliff having a height of 24.0 m. with what speed does the coin hit the ground? a. 32.7 m/s b. 0 m/s c. 26.5 m/s d. 38.4 m/s