You are standing in a moving bus, facing forward, when you suddenly slide forward as the...
3. You are standing in a moving bus, facing forward, when you suddenly slide forward as the bus comes to an immediate stop. What force caused you to slide forward? a) the force due to friction between you and the floor of the bus b) gravity c) There is not a force causing you to slide forward - it is due to inertia. d) the normal force due to your contact with the floor of the bus 4. A block...
you are facing forward in a bus traveling down a straight freeway. while the bus is decelerating from 55 to 35 mph, you drop a coffee mug directly over a spot on the floor. where will the mug land relative to the spot?
Activity 4: Explaining Phenomena Using Force Ideas You are the expert witness You will need Low-friction cart and track Small block (to represent a case) A passenger is suing a bus company for injuries she claims were sustained when the bus had to brake sharply to avoid hitting an obstruction in the road. The passenger was seated in the row of seats behind the luggage rack. She claims that when the driver braked sharply, this caused a case to fly...
A lift is moving upward with an acceleration a=0.5ms2. There is a block of mass m-16 kg on the floor of the lift. What is the contact force F between the floor and the block in newton? the acceleration due to gravity is 9.8ms2. The answer's unit is N. Q3.2 Acceleration a Acceleration due to gravity g=9.8ms2 Refer to the figure below. Mass m Contact force F between the mass m and the floor of the lift
You are standing on a number line facing in the forward(positive) direction. If you take 2 steps back, then 5 steps forward; then double the distance from your starting point;take two steps back then move half the distance towards the starting point and then take three steps backwards. How many steps from the starting point are you? A Do you need to move forward(positive direction) or backwards (negative direction) to get back to the starting point? A/
When you are standing on a train and the train brakes suddenly, you need to stop yourself from falling over. Explain what is happening According to physics, objects cannot apply forces on themselves. So how does a car accelerate? How does a parachute let you fall great heights without serious injuries?
When you are standing on a train and the train brakes suddenly, you need to stop yourself from falling over. Explain what is happening According to physics, objects cannot apply forces on themselves. So how does a car accelerate? How does a parachute let you fall great heights without serious injuries?
Q1: When two objects slide against oneanother, which of the following statements about the force offriction between them is true? Themagnitude of the frictional force is always equal to . Themagnitude of the frictional force is always less than . Themagnitude of the frictional force is determined by other forces onthe objects so it can be either equal to or less than . Q2: When two objects are in contact with norelative motion, which of the following statements about thefrictional...
1) A 67-kg base runner begins his slide into second base when he is moving at a speed of 3.7 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to friction acting on the runner? (b) How far does he slide? 2) A running 53-kg cheetah has a top speed of 31 m/s. (a) What...
Question 3 (identifying forces) You are standing on the ground with friction. You walk forward by accelerating to the right from rest a. Draw a free-body diagram for you. Scale the length of the force vectors correctly. b. What is the direction of the net force?