Question

3. A 5kg box moves up an incline angle of 30o with an initial speed of 20 m/s. If µk = 0.3, what is the acceleration of the box as it moves up the ramp? (a) 1.5 m/s2 (b) 2.4 m/s2 (c) 5 m/s2 (d) 7.6 m/s2

4. A 5kg box moves up an incline angle of 30o with an initial speed of 20 m/s. If µk = 0.3, what is the maximum height up the ramp reached by the box? (a) 0.7m (b) 1.3m (c) 13.2m (d) 26.3m

3d

4c

23. A 1700kg car moving at 25 m/s to the right hits a 2500kg truck moving at 10 m/s to the left. If the collision is elastic, what is the velocity of the car after the collision? (a) 16.7 m/s to the left (b) 16.7 m/s to the right (c) 18.3 m/s to the left (d) 18.3 m/s to the right

24. A 1700kg car moving at 25 m/s to the right hits a 2500kg truck moving at 10 m/s to the left. If the collision is elastic, what is the velocity of the truck after the collision? (a) 16.7 m/s to the left (b) 16.7 m/s to the right (c) 18.3 m/s to the left (d) 18.3 m/s to the right

25. A 1700kg car moving at 25 m/s to the right hits a 2500kg truck moving at 10 m/s to the left. What is the maximum amount of heat that could be released during the collision? (a) 125 kJ (b) 531.2 kJ (c) 619.7 kJ (d) 656.2 kJ

23a

24d

25c

Answer 1