Explain why passengers in a fast moving car are jerked forward when the car is suddenly brought to rest.
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Why should the driver and passengers in a car wear seatbelts? Choose the options that most accurately complete the statement When a car moving forward at a constant speed v comes to a sudden stop, passengers without seatbelts because o according to continue moving forward at speed the force exerted by the seat, accelerate forward their inertia, their reaction force
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 5.6 m/s2 for 3 seconds. It then continues at a constant speed for 7.8 seconds, before applying the brakes such that the car’s speed decreases uniformly coming to rest 178.16 meters from where it started. The yellow car accelerates uniformly for the entire distance, finally catching the blue car just as the...
A ball in the shape of a uniform spherical shell (like a soccer ball) of mass 1.5 kg and radius 15 cm rolls down a 35° incline that is 6.0 m high, measured vertically. The ball starts from rest, and there is enough friction on the incline to prevent slipping of the ball. (a) How fast is the ball moving forward when it reaches the bottom of the incline, and what is its angular speed at that instant? (b) If...
A roller coaster car is going over the top of a 12-m-radius circular rise. At the top of the hill, the passengers "feel light," with an apparent weight only 60% of their true weight. How fast is the coaster moving?
A roller coaster car is going over the top of a 16-m-radius circular rise. At the top of the hill, the passengers "feel light," with an apparent weight only 60% of their true weight. How fast is the coaster moving?
A 1100-kg car moving on a horizontal surface has speed v = 50 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.3 m . What is the spring stiffness constant of the spring?
A roller coaster car is going over the top of a 15 m- radius circular rise. At the top of the hill, the passengers "feel light" with an apparant weight only 50% of their true weight. How fast is the roller coaster moving?
A 1100-kg car moving on a horizontal surface has speed v = 50 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.7 m What is the spring stiffness constant of the spring? Express your answer to two significant figures and include the appropriate units.
Question 6 (motion to force) A 1000 kg car with you in it accelerates from rest to 32 m/s in a time of 4 seconds. You are 50 kg. a. With how much force does the ground push the car forward? b. With how much force does the seat push you forward?
Question 6 (motion to force) A 1000 kg car with you in it accelerates from rest to 32 m/s in a time of 4 seconds. You are 50 kg. a. With how much force does the ground push the car forward? b. With how much force does the seat push you forward?