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A biker going at a speed of 45m/s sees red light ahead and applies disc brakes which retard the vehicle at 5m/. Find the velocity of the biker after 7 seconds provided the time at which he applied the brakes the red signal was at 45s.
A stationary ball of mass 3kg undergoes direct central impact with a ball of mass 1 kg moving towards it with a velocity of 12m/s. If the impact is perfectly elastic, then calculate the velocity of 3kg ball.
A fan consumes 50 W of electric power and has an air discharge of 0.25 kg/s, the maximum air outlet velocity is close to
A body weighing 1000 kg falls 8 cm and strikes a 500 kg/cm spring. The deformation of spring will be ____cm.
A bucket of water weighing 10 kg is pulled up from a 20 m deep well by a rope weighing 1 kg/m length, then the work done is __________.
During Inelastic collision of two particles, which one of the following is conserved?
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Tags :AE & JE Exams
Aug 9AE & JE Exams