Question 1 A 15.0 kg concrete block accelerates down a rough slope inclined at 40.0°. 40 a) On the diagram above, show a

Post by **answerhappygod** » Sun May 22, 2022 1:48 pm

: Question 1 A 15 0 Kg Concrete Block Accelerates Down A Rough Slope Inclined At 40 0 40 A On The Diagram Above Show A 1 (21.34 KiB) Viewed 9 times

: Question 1 A 15 0 Kg Concrete Block Accelerates Down A Rough Slope Inclined At 40 0 40 A On The Diagram Above Show A 2 (21.34 KiB) Viewed 9 times

: Question 1 A 15 0 Kg Concrete Block Accelerates Down A Rough Slope Inclined At 40 0 40 A On The Diagram Above Show A 3 (7.42 KiB) Viewed 9 times

: Question 1 A 15 0 Kg Concrete Block Accelerates Down A Rough Slope Inclined At 40 0 40 A On The Diagram Above Show A 4 (13.79 KiB) Viewed 9 times

: Question 1 A 15 0 Kg Concrete Block Accelerates Down A Rough Slope Inclined At 40 0 40 A On The Diagram Above Show A 5 (18.46 KiB) Viewed 9 times

: Question 1 A 15 0 Kg Concrete Block Accelerates Down A Rough Slope Inclined At 40 0 40 A On The Diagram Above Show A 6 (27.41 KiB) Viewed 9 times

Question 1 A 15.0 kg concrete block accelerates down a rough slope inclined at 40.0°. 40 a) On the diagram above, show and label clearly all the forces acting on the block. b) Calculate the net force on the block if its acceleration is 4.20 m/s² c) Find the size of the normal force on the block d) Determine the force of friction acting on the block

Question 3 A construction crane lifts a 2.50 tonne concrete block to a height of 21.5 metres in 15.0 seconds. Find the power exerted by the crane.

Question 4 A car of mass 1250 kg is travelling along a straight flat road. a) How much work is done by the motor on the car as it accelerates the car from rest to a speed of 25 m/s? b) The car's motor can develop 135 kilowatts of power. What is the shortest time over which it can accelerate to this speed?

Question 5 The skater and his board have a combined mass of 75.0 kg. The slide down the path generates 155 joules of heat energy. Find the speed of the skater and his board when they reach the ground assuming he starts from rest at the top of the slide. 4.5 m t

Question 6 An astronaut in her space suit has a total mass of 75.0 kg, including suit and oxygen tank. Her tether line loses its attachment to her spacecraft while she's on a spacewalk. Initially at rest with respect to her spacecraft, she throws her 12.0 kg oxygen tank away from her spacecraft with a speed of 8.00 m/s to propel herself back toward it as shown in the figure below. 8.00 m/s 75.0 kg 12.0 kg a) with what speed does the astronaut move after she throws the tank? b) If the astronaut pushed the tank for 0.80 s, what was the magnitude of the force she applied to it? c) What was the force that the tank applied to the astronaut (magnitude and direction)?