If air resistance is not considered in a projectilemotion, the horizontal motion takes place with.
When a projectile is fired at an angle q with thehorizontal with velocity μ, then its vertical component
Range of a projectile is R, when the angle ofprojection is 30°. Then the value of the other angle of projection for the same range is
A ball is thrown upwards and it returns to ground describing a parabolic path. Which of the following quantities remains constant throughout the motion?
If R is the maximum horizontal range of a projectile,then the greatest height attained by it is
If the time of flight of a projectile is doubled, whathappens to the maximum height attained?
The path of one projectile as seen by an observeron another projectile is a/an:
A body is projected at 30° with the horizontal. Theair offers resistance in proportion to the velocity of the body. Which of the following statements iscorrect?
A particle is projected with a velocity v so that its range on a horizontal plane is twice the greatest height attained. If g is acceleration due to gravity,then its range is
During a projectile motion if the maximum height equalsthe horizontal range, then the angle of projection with the horizontal is
What is the momentum of a body of 2 kg at its highest point, when thrown with a velocity of 15 m/s at an angle of of 70o with the horizontal?
The point from where a ball is projected is taken as theorigin of the coordinate axes. The x and y componentsof its displacement are given by x = 6t and y = 8t - 5t2.What is the velocity of projection?
In the above problem, what is the angle of projection with horizontal?
A particle is fired with velocity μ making angle θ withthe horizontal. What is the change in velocity whenit is at the height point?
A particle is fired with velocity μ making angle q with the horizontal. What is the change in velocity when it is at the height point?
a. μ cos q
c. μ sin q
d. (μ cos q - μ)
In the above part of the problem, change in speed is
A ball is thrown upwards at an angle of 60° to thehorizontal. It falls on the ground at a distance of 90 m.If the ball is thrown with the same initial velocity at anangle 30°, it will fall on the ground at a distance of
A projectile will cover same horizontal distance whenthe initial angles of projection are:
A shot is fired from a point at a distance of 200 m fromthe foot of a tower 100 m high so that it just passesover it horizontally. The direction of shot with horizontal is:
Two bullets are fired horizontally with different velocitiesfrom the same height. Which will reach the groundfirst?
The maximum height reached by projectile is 4 m. Thehorizontal range is 12 m. The velocity of projection in ms 1 is (g is acceleration due to gravity)
A ball thrown by one player reaches the other in 2 s.The maximum height attained by the ball above thepoint of projection will be about
For angles of projection of a projectile at angles (45+ α ) and (45 - α ), the horizontal ranges described bythe projectile are in the ratio of
At the top of the trajectory of a projectile, theacceleration is
A projectile is thrown at an angle of 40° with the horizontal and its range is R1. Another projectile is thrown at an angle 40° with the vertical and its range is R2. What is the relation between R1 and R2?
A projectile has a time of flight T and range R. If the time of flight is doubled, keeping the angle of projection same, what happens to the range?
At the uppermost point of a projectile, its velocity and acceleration are at an angle of
A ball is thrown from a point with a speed v0 at an angleof projection q . From the same point and at the same instant, a person starts running with a constant speedv0/2 to catch the ball. Will the person be able to catch the ball? If yes, what should be the angle of projection?
An airplane moving horizontally with a speed of 180kmh-1 drops a food packet while flying at a height of490 m. The horizontal range of the food packet isg = 9.8 ms-2.
A gun fires two bullets at 60° and 30° with the horizontal.The bullets strike at some horizontal distance. The ratioof the maximum height for the two bullets is in the ratio:
A body is projected at an angle of 30° with the horizontal and with a speed of 30 ms-1. What is the angle with the horizontal after 1.5 s? (g = 10 ms-2)
A grasshopper can jump a maximum distance 1.6 m. It spends negligible time on the ground. How far can it go in 10 s?
The maximum height attained by a projectileis increased by 5%. Keeping the angle of projection constant, what is the percentage increase in horizontal range?
The maximum height attained by a projectileis increased by 10 %. Keeping the angle of projection constant, what is the percentage increase in the time of flight?
A body has an initial velocity of 3 m/s and has anacceleration of 1 ms-2 normal to the direction of the initial velocity. Then its velocity 4 s after the start is
When a particle is thrown horizontally, the resultant velocity of the projectile at any time t is given by
A hiker stands on the edge of a cliff 490 m abovethe ground and throws a stone horizontally witha speed of 15 ms-1. The time taken by the stone to reach the ground is (g = 9.8 ms-2)
A hiker stands on the edge of a cliff 490 m above the ground and throws a stone horizontally with a speed of 15 ms-1. The time taken by the stone
to reach the ground is (g = 9.8 ms-2).
a. 10 s
b. 5 s
c. 12 s
d. 15 s
In the above part, the vertical component ofthe velocity on hitting the ground is
A hiker stands on the edge of a cliff 490 m above the ground and throws a stone horizontally with a speed of 15 ms-1. The time taken by the stone to reach the ground is (g = 9.8 ms-2).
a. 10 s
b. 5 s
c. 12 s
d. 15 s
In the above part , the speed with whichstone hits the ground is
Two tall buildings are 30 m apart. The speed with which a ball must be thrown horizontally from a window 150m above the ground in one building so that it enters awindow 27.5 m from the ground in the other building is
A shell fired from the ground is just able to crosshorizontally the top of a wall 90 m away and 45 m high. The direction of projection of the shell will be: