How much must an object weigh to be able to float in water
a)less than a gram
(b) less than the amount of water it displaces
c) more than the amount of water it displaces
d) more than a gram

Which of the following are appropriate acceleration units?

What kind of simple machine is a catapult?

In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km.h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.