Physics..............................?
What is the unbalanced force acting on a moving car with a constant velocity of 19 m/s (42 mi/h)?
A force of 3.4 N is exerted on a 5.1 g rifle bullet. What is the bullet's acceleration?
A constant net force of 1510 N gives a toy rocket an acceleration of 1.3 m/s2. What is the mass of the rocket?
More Questions From This User See All
Answers & Comments
Verified answer
Since the car is moving with a constant velocity, the acceleration is zero and therefore the unbalanced force is zero (i.e. the forces are all balanced).
F = ma. Convert mass to kilograms to get 0.0051 kg. Then rearranging the formula gives a = F/m = 3.4/0.0051 = 666 m/s.
F = ma again. this time we need to rearrange to m = F/a = 1510/1.3 = 1162 kg. Some toy that is!