Question

engineers are developing new types of guns that might someday be used to launch satellities as if they were bullets. One such gun can give a small object a velocity of 3.5km/s moving it through only 2.0m.

a) What acceleration does the gun give this object?
b) Over what time interval does the acceleration take place

Answer 1

Answer:

option (a) is the correct

Answer 2

Given : final velocity = 3.5km/s

           initial velocity = 0 km/s

           distance covering = 2.0m

To find: acceleration that gun gives this object  , and

             time  interval for which the acceleration takes place.

Solution :

(a)Time taken by small object to move a distance of 2.0m

T= distance ÷ velocity

Therefore , time  = 2m÷ 3500m/s

                            =5.7×10^-4 sec

So, acceleration = ( final velocity - initial velocity)/time

                            = (3500-0)/(5.7×10^-4)

                            = 6140355.08 m/sec²

                            =614.0355km/sec²

(b)

Time interval over the acceleration take place = 5.7×10^-4 sec