If a bicyclist of mass 69 kg (including the bicycle) can coast down a 7.5 degree...
If a bicyclist of mass 69 kg (including the bicycle) can coast down a 7.5 degree hill at a steady speed of 6.0 km/h because of air resistance, how much force must be applied to climb the hill at the same speed (and the same air resistance)? Use two sig figs.
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If a bicyclist of mass 69 kg (including the bicycle) can coast
down a 7.5 degree...
A bicyclist is coasting straight down a hill at a constant speed. The mass of the...
A bicyclist is coasting straight down a hill at a constant speed. The mass of the rider and bicycle is 89.0 kg, and the hill is inclined at 13.0° with respect to the horizontal. Air resistance opposes the motion of the cyclist. Later, the bicyclist climbs the same hill at the same constant speed. How much force (directed parallel to the hill) must be applied to the bicycle in order for the bicyclist to climb the hill? Number Units
Imagine a cyclist coasting down a 5.0◦ incline at a constant speed of 6.0 km/h because...
Imagine a cyclist coasting down a 5.0◦ incline at a constant speed of 6.0 km/h because of air resistance. If the total mass of the bicycle + cyclist is 50 kg, how much force must be generated to climb back up the incline at the same speed (and same air resistance)?
A bicyclist coasts down a 6.5 ∘ hill at a steady speed of 3.5 m/s ....
A bicyclist coasts down a 6.5 ∘ hill at a steady speed of 3.5 m/s . Part A Assuming a total mass of 75 kg (bicycle plus rider), what must be the cyclist's power output to climb the same hill at the same speed? Express your answer using two significant figures.
Please help a.How high will a 1.60-kg rock go from the point of release if thrown...
Please help a.How high will a 1.60-kg rock go from the point of release if thrown straight up by someone who does 80.0 J of work on it? Neglect air resistance. Express your answer to three significant figures and include the appropriate units. b.A bicyclist coasts down a 9.0 ∘ hill at a steady speed of 6.0 m/s . Part A Assuming a total mass of 95 kg (bicycle plus rider), what must be the cyclist's power output to climb...
A bicyclist on an old bike (combined mass: 94 kg) is rolling down (no pedaling or...
A bicyclist on an old bike (combined mass: 94 kg) is rolling
down (no pedaling or braking) a hill of height 129 m. Over the
course of the 309 meters of downhill road, she encounters a
constant friction force of 342 Newton. If her speed at the top of
the hill is 5 m/s, what is her speed at the bottom of the
hill?
A bicyclist who has a mass (including their bike) of 85 kg is racing around a...
A bicyclist who has a mass (including their bike) of 85 kg is racing around a track. The radius of curvature of the track is 20 m. The bicyclist’s linear velocity is 17 m/s. Given the bicyclist is at a constant speed, staying level (not going up or down, therefore no vertical acceleration), what angle does the track need to be banked so that NO frictional force is required to keep their circular path?
A woman rides a bicycle down a hill with a 15% slope (rise/run). The combined mass...
A woman rides a bicycle down a hill with a 15% slope (rise/run). The combined mass of the bicycle plus woman is 50 kg. She is riding into a 20-km-per hour wind. The only forces acting on the woman are drag force and weight. If the woman and bicycle together have a projected area of 1.0 m2, and the coefficient of drag is 1.1, how fast is the bicycle going relative to the ground? The density of air is 1.23...
A force of 5500 N gives Sally a little push forward as she rides her bicycle....
A force of 5500 N gives Sally a little push forward as she rides her bicycle. At the same time air resistance pushes against her with a force of 100 N. If she starts with a speed of 2.0 m/s and is on a level road, how fast will she be moving after 30 m? The mass of the bicyclist and her bicycle is 120 kg.
A bicycle wheel is approximately a hollow cylinder with an outside radius of 37 cm, inside radius of 33 cm, and a mass o...
A bicycle wheel is approximately a hollow cylinder with an outside radius of 37 cm, inside radius of 33 cm, and a mass of 0.75 kg. A child rolls a bicycle tire down the street to see how far it will roll. a) While the wheel is on a 5.14° degree slope (9%), what is the acceleration of the wheel? b) What is the minimum coefficient of friction for the wheel to roll on a 5.14°slope? c) Ignoring friction, how...
To the nearest newton, what is the required net force to give a bicyclist and bicycle...
To the nearest newton, what is the required net force to give a bicyclist and bicycle with a combined mass of 87.3 kg an acceleration of 2.34 m/s2? A car initially contains just its driver. The combined mass of car and driver is 1400 kg. When the gas pedal is pushed down all the way, the car reaches its maximum acceleration of 3.1 m/s2. If the driver then picks up three of his friends, the combined mass is increased by...
A bicyclist is coasting straight down a hill at a constant speed. The mass of the rider and bicycle is 89.0 kg, and the hill is inclined at 13.0° with respect to the horizontal. Air resistance opposes the motion of the cyclist. Later, the bicyclist climbs the same hill at the same constant speed. How much force (directed parallel to the hill) must be applied to the bicycle in order for the bicyclist to climb the hill? Number Units
A bicyclist on an old bike (combined mass: 94 kg) is rolling
down (no pedaling or braking) a hill of height 129 m. Over the
course of the 309 meters of downhill road, she encounters a
constant friction force of 342 Newton. If her speed at the top of
the hill is 5 m/s, what is her speed at the bottom of the
hill?
A woman rides a bicycle down a hill with a 15% slope (rise/run). The combined mass of the bicycle plus woman is 50 kg. She is riding into a 20-km-per hour wind. The only forces acting on the woman are drag force and weight. If the woman and bicycle together have a projected area of 1.0 m2, and the coefficient of drag is 1.1, how fast is the bicycle going relative to the ground? The density of air is 1.23...
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