A ball moving with speed v normally towards a moving wall approaching it with speed u. The final speed of ball is (the collision is perfectly elastic)

A ball of mass 0.5 kg moving with a velocity of 2 m/sec strikes a wall normally and bounces back with the same speed. If the time of contact between the ball and the wall is one millisecond, the average force exerted by the wall on the ball is

A ball undergoes an elastic collision with a vertical wall. Which of the following is equal to zero?

A ball is moving with a constant velocity. After some time, it collides with a wall. Which one of the following remains conserved except momentum?*1 pointEnergyDisplacementPowerForce

A ball is moving with a constant velocity. After some time, it collides with a wall. Which one of the following remains conserved except momentum?*1 pointEnergyDisplacementPowerForceA bike going round a circular track whose radius is 63 m experiences an acceleration of 2.3 m/s^2. What is its velocity?*1 point1.2 m/s3.2 m/s4.8 m/s12 m/sFull Name (Starting with Surname in capital letters):*Your answerA body of mass 4 kg moving at a speed of 3 m/s collides with another body of mass 2 kg moving at 2 m/s in the opposite direction. If the collision is perfectly inelastic, find the velocity of the two bodies after the collision.*1 point1.33 m/s2.34 m/s3.22 m/s4.00 m/sWhat is the total momentum of a system of three objects with masses 2 kg, 3 kg, and 5 kg, moving at velocities of 4 m/s, -2 m/s, and 3 m/s, respectively?*1 point0 kg m/s9 kg m/s17 kg m/s19 kg m/sThe open E-string on a guitar vibrates with a frequency of 83 Hz. How many cycles does it complete in 5.0 s? *1 point78 cycles88 cycles415 cycles600 cyclesFor a planet to be in a stable circular orbit it must have a velocity which is *1 pointPerpendicular to its orbitTangential to its orbitGreater than the force of gravityLess than the force of gravityThe value of acceleration due to gravity of earth at the equator is less than that of the poles due to _____*1 pointShape and rotation of the earthMass of the sunMass of the earthMass of the moonWhat is the force of gravity experienced by an object at the centre of the earth? (Assume that the earth is perfectly spherical)*1 point0 g-force1 g-force9.81 g-force10 g-forceWhich of the following is a condition for a body to be in equilibrium when acted upon by a set of coplanar forces?*1 pointThe forces must be reasonably largeThe net torque on the body must be zeroThe masses acting on the body must be equalNone of the aboveTwo bodies of masses 0.5 kg and 1 kg are lying in the X-Y plane at points (-1, 2) and (3,4) respectively. Locate the center of mass of the system*1 point(1.67, 3.33)(3, 1)(3.33, 1.67)(16.7, 33.3)Which of the following changes when a body performs uniform circular motion?*1 pointSpeedMassDirectionEnergyA 0.22 kg ball is going in circles at a frequency of 25 Hz due to being attached to a 1.2 m long string. What is the tension in the string?*1 point3125.0 N6515.6 N6615.6 N6815.6 NThe mathematical expression for centripetal force is ______*1 pointmv^2/rmv/rv^2/rmv^3What will be the value of acceleration due to gravity on the surface of the earth if the radius of the earth suddenly decreases to 60% of its present value, keeping the mass of the earth unchanged?*1 point5.89 m/s^29.81 m/s^216.35 m/s^227.14 m/s^2Compute the value of g at a height of 4RE above the surface of the earth, given that the mass and radius of the earth (RE) have their usual values.*1 point0.39 m/s^20.42 m/s^20.49 m/s^23.90 m/s^2Compute the surface gravity, g, for the surface of Mercury. Its radius is 2.4 x 10^6 m and its mass is 3.3 x 10^23 kg *1 point3.8 m/s^23.6 m/s^23.3 m/s^22.4 m/s^2A 3000 kg truck moving with a velocity of 10 m/s hits a 1000 kg parked car. The impact causes the 1000 kg car to be set in motion at 15 m/s. Assuming that momentum is conserved during the collision, what is the velocity of the truck immediately after the collision?*1 point5 m/s10 m/s17 m/s21 m/sSubmitPage 1 of 1Clear formNever submit passwords through Google Forms.This form was created inside of Bingham University. Report Abuse Forms

A ball of 0.2 kg hits a wall with a velocity of 25 m/s at an angle of 45°. If the ball rebounds at 90° to the direction of incidence, change in momentum of the ball -