Question 13 just using the air resistance ofproviding a force of 2000 N as well as the air resistance.must be applied if the car is to stop at the junction.PS11 A firework of mass 0.3 kg has a charge that provides an upward force of 7 N for 3s.a Assuming no air resistance, find the maximum height reached by the firework.b The explosive for the firework has a fuse that burns at a rate of 12 mm per second. Find how long the fushould be so the firework explodes at the maximum height.12 A boy drags a cart of mass 5 kg with force 10 N along a horizontal road. There is air resistance of 2 N. At somepoint the boy lets go of the cart and the cart slows down due to air resistance until coming to rest. In total, thecart has travelled 36 m. Find the length of time the boy was dragging the cart.13 A light pallet is at rest on the ground with a stone of mass 30 kg on top of it but not attached. A crane lifts thepallet by providing a force of 310 N upwards to a height of 8 m, at which point the pallet instantly stops and thestone loses contact with it. Find the maximum height reached by the stone.14 An air hockey table is 2 m long. A puck of mass 50 g is on the table at the middle point. A player hits the puckwith initial speed 4 ms¹ directly towards one side. Once it is moving there is air resistance of RN. Every timethe puck hits a side, the speed is reduced by 20%.32aShow that if R< the puck returns past the middle point of the table.205'b Given that the puck does not return to the middle point a second time, find a lower bound for R.15 A particle P is projected vertically upwards, from a point 0, with a velocity of 8 ms-¹. The point A is the highespoint reached by P. Findithe speed of P when it is at the mid-point of OA,ii the time taken for P to reach the mid-point of OA while moving upwards.1Cambridge International AS & A Level Mathematics 9709 Paper 43 Q3 November 201E16 Particles P and Q are projected vertically upwards, from different points on horizontal ground, with velocitiesof 20 ms¹ and 25 ms respectively. Q is projected 0.4s later than P. Find

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light pallet is at rest on the ground with a stone of mass 30 allet by providing a force of 310 N upwards to a height of 8 m, at which point the pallet instantly stops and the one loses contact with it. Find the maximum height reached by the stone. n air hockey table is 2 m long. A puck of mass 50 g is on the table at the middle point. A player hits the puck ith initial need 4ms directly towards one side. Once it is moving there is air resistance of RN. Every time

light pallet is at rest on the ground with a stone of mass 30 allet by providing a force of 310 N upwards to a height of 8 m, at which point the pallet instantly stops and the one loses contact with it. Find the maximum height reached by the stone. n air hockey table is 2 m long. A puck of mass 50 g is on the table at the middle point. A player hits the puck ith initial need 4ms directly towards one side. Once it is moving there is air resistance of RN. Every time

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 62PE: Integrated Concepts The 70.0-kg swimmer in Figure 7.44 starts a race with an initial velocity of...

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