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Questions and answers by
Swastika
Questions (11)
A 70 kg man stands on an accurate spring scale inside the elevator. Given that the lift can accelerate and decelerate at 2.2
0 answers
908 views
An astronaut shoots you in space given that the bullet is weightless, could it injure you?
0 answers
384 views
Calculate the force needed to accelerate a 1 kg ball by 3 m/s:
a. in space along way from the earth. b. on the ground in a
0 answers
386 views
Describe the difference between the quantities, mass and weight. Give a description of two distinctly different ways in which
0 answers
544 views
A 200 kg piano is suspended by a rope from a high building. (Assume the mass of the rope is zero).
a. What is the weight of the
0 answers
862 views
A five kg box is pulled along a frictionless surface by a string just capable of suspending a 15 kg mass at rest. What is the
0 answers
431 views
A jet fighter with mass 5000 kg accelerates from 360 km/hr in 10b s. Compute the minimum thrust required by the jet's engines.
0 answers
475 views
A 60 kg of sprinter accelerates from rest at 2.5 m?s^2 East for 4s. What force is acting and what is the final speed?
1 answer
526 views
A 10^4 kg train moving at 20m/s stops in a distance of 500m. Calculate the force applied by the train's braking system.
1 answer
436 views
When rolling along the felt on the billiard table, the ball experiences a frictional force of 0.2 N.
a. What is the deceleration
0 answers
490 views
A force of 15 N (delivered by a cue) acts on a billiard ball for 0.01 s. Find the magnitude of the
a. acceleration of the ball b.
0 answers
567 views
