(a) Saif is going in his bike with an initial speed of 24.2 m/s and as he approaches a crane, the braking system abruptly brings the 223kg bike (rider mass included) to a speed of 4.3 m/s over a distance of 6.7m. Detemine the braking force applied to his bike. A tow truck is experiencing 600 N tensional force in the cable and the (b) cable makes a 60° angle with the horizontal, If the mass of the car is RF 2400 kg, calculate the acceleration with which it gets lifted? 60° (c) A Physics 1 student got confused by Newton's laws and asks her teacher this question "Astronauts in outer orbit are weightless (or float) because there is no gravity there". Is this true? If not, explain the mistake in this statement.
(a) Saif is going in his bike with an initial speed of 24.2 m/s and as he approaches a crane, the braking system abruptly brings the 223kg bike (rider mass included) to a speed of 4.3 m/s over a distance of 6.7m. Detemine the braking force applied to his bike. A tow truck is experiencing 600 N tensional force in the cable and the (b) cable makes a 60° angle with the horizontal, If the mass of the car is RF 2400 kg, calculate the acceleration with which it gets lifted? 60° (c) A Physics 1 student got confused by Newton's laws and asks her teacher this question "Astronauts in outer orbit are weightless (or float) because there is no gravity there". Is this true? If not, explain the mistake in this statement.
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