Chapter 3 – Motion in a Plane
A ball is thrown from a roof top at an angle of 45° above the horizontal. It hits the ground a few seconds later. At what point during its motion, does the ball have . (a) greatest speed (b) smallest speed (c) greatest acceleration Explain.
31
Oct
A ball is thrown from a roof top at an angle of 45° above the horizontal. It hits the ground a few seconds later. At what point during its motion, does the ball have . (a) greatest speed (b) smallest speed (c) greatest acceleration Explain. A ball is thrown from a roof top at an [...]
A cyclist starts from centre O of a circular park of radius 1 km and moves along the path OPRQO as shown in figure. If he maintains constant speed of 10 ms^−1, what is his acceleration at point R in the magnitude and direction ?
31
Oct
A cyclist starts from centre O of a circular park of radius 1 km and moves along the path OPRQO as shown in figure. If he maintains constant speed of 10 ms^−1, what is his acceleration at point R in the magnitude and direction ? A cyclist starts from centre O of a circular park [...]
Following are four different relations about displacement, velocity and acceleration for the motion of a particle in general. Choose the incorrect one (s).
31
Oct
Following are four different relations about displacement, velocity and acceleration for the motion of a particle in general. Choose the incorrect one (s). Following are four different relations about displacement velocity and acceleration for the motion of a particle in general. Choose the incorrect one (s). October 31, 2020 Category: Chapter 3 - Motion in [...]
A particle slides down a frictionless parabolic (y=x^2) track (A−B−C) starting from rest at point A. Point B is at the vertex of parabola and point C is at a height less than that of point A. After C, the particle moves freely in air as a projectile. If the particle reaches highest point at P, then
31
Oct
A particle slides down a frictionless parabolic (y=x^2) track (A−B−C) starting from rest at point A. Point B is at the vertex of parabola and point C is at a height less than that of point A. After C, the particle moves freely in air as a projectile. If the particle reaches highest point at [...]
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A particle slides down a frictionless parabolic (y=x^2) track (A−B−C) starting from rest at point A. Point B is at the vertex of parabola and point C is at a height less than that of point A. After C ,
the particle moves freely in air as a projectile. If the particle reaches highest point at P ,
then ,
The range of a projectile fired at an angle of 15^∘ is 50 m. If it is fired with the same speed at an angle of 45T∘ its range will be
31
Oct
The range of a projectile fired at an angle of 15^∘ is 50 m. If it is fired with the same speed at an angle of 45T∘ its range will be The range of a projectile fired at an angle of 15^∘ is 50 m. If it is fired with the same speed at an [...]
A bullet fired at an angle of 30^o with the horizontal hits the ground 3.0 km away. By adjusting its angle of projection, can one hope to hit a target 5.0 km away? Assume the muzzle speed to be fixed, and neglect air resistance.
30
Oct
A bullet fired at an angle of 30^o with the horizontal hits the ground 3.0 km away. By adjusting its angle of projection, can one hope to hit a target 5.0 km away? Assume the muzzle speed to be fixed, and neglect air resistance. A bullet fired at an angle of 30^o with the horizontal [...]
A particle starts from the origin at t = 0 s with a velocity of 10.0 j ^ m/s and moves in the x-y plane with a constant acceleration of (8.0 i^ + 2.0 j ^ ) m/s^2 . (a) At what time is the x- coordinate of the particle 16 m? What is the y-coordinate of the particle at that time? (b)What is the speed of the particle at the time ?
30
Oct
A particle starts from the origin at t = 0 s with a velocity of 10.0 j ^ m/s and moves in the x-y plane with a constant acceleration of (8.0 i^ + 2.0 j ^ ) m/s^2 . (a) At what time is the x- coordinate of the particle 16 m? What is the [...]
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a motorist follows a track that turns to his left by an angle of 60° after every 500 m. Starting from a given turn ,
On an open ground ,
sixth and eighth turn. Compare the magnitude of the displacement with the total path length covered by the motorist in each case. ,
specify the displacement of the motorist at the third ,
The position of a particle is given by r = 3.0 t i ^ − 2.0 t^2 j^ + 4.0 k^m where t is in seconds and the coefficients have the proper units for r to be in metres (a) Find the v and a of the particle? (b) What is the magnitude and direction of velocity of the particle at t = 2.0 s ?
30
Oct
The position of a particle is given by r = 3.0 t i ^ − 2.0 t^2 j^ + 4.0 k^m where t is in seconds and the coefficients have the proper units for r to be in metres (a) Find the v and a of the particle? (b) What is the magnitude and direction [...]
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a motorist follows a track that turns to his left by an angle of 60° after every 500 m. Starting from a given turn ,
On an open ground ,
sixth and eighth turn. Compare the magnitude of the displacement with the total path length covered by the motorist in each case. ,
specify the displacement of the motorist at the third ,
An aircraft executes a horizontal loop of radius 1.00 km with a steady speed of 900 km/h. Compare its centripetal acceleration with the acceleration due to gravity.
30
Oct
An aircraft executes a horizontal loop of radius 1.00 km with a steady speed of 900 km/h. Compare its centripetal acceleration with the acceleration due to gravity. An aircraft executes a horizontal loop of radius 1.00 km with a steady speed of 900 km/h. Compare its centripetal acceleration with the acceleration due to gravity. October [...]
A passenger arriving in a new town wishes to go from the station to a hotel located 10 km away on a straight road from the station. A dishonest cabman takes him along a circuitous path 23 km long and reaches the hotel in 28 min. What is (a) the average speed of the taxi. (b) the magnitude of average velocity. Are the two equal?
30
Oct
A passenger arriving in a new town wishes to go from the station to a hotel located 10 km away on a straight road from the station. A dishonest cabman takes him along a circuitous path 23 km long and reaches the hotel in 28 min. What is (a) the average speed of the taxi. [...]
Tags:
a motorist follows a track that turns to his left by an angle of 60° after every 500 m. Starting from a given turn ,
On an open ground ,
sixth and eighth turn. Compare the magnitude of the displacement with the total path length covered by the motorist in each case. ,
specify the displacement of the motorist at the third ,