6. the acceleration of free fall on a paticular planet is 8.0m/s*s. An object is dropped from a height and hits the ground after 1.5s. From what height was it dropped?
11m
12m
9.0m
6.0m
7. A substance which can undergo large plastic deformation without cracking can be described as
hard
malleable/ductile
brittle
stiff
8. A free falling object has a speed of 5.0m/s. After falling a further 20m its speed will be...
20m/s
45m/s
15m/s
25m/s
9. A student is asked to determine the output of a mostor as it lifts an object. Hemeasures the height through which the object is raised, the time taken and the weight of the object. To find the power he must calculate...
