Related Questions

When a ball is thrown vertically upwards, which of the following quantities remains constant during its motion?
A Energy
B Displacement
C Velocity
D Acceleration
5 m উচ্চতা হতে একটি বলকে 20 m/s বেগে অনুভূমিকের সাথে 30° কোণে উপরের দিকে নিক্ষেপ করা হলো। তাহলে বলটির বিচরণ কাল কত ? (A ball is thrown upward with an angle of 30° with the horizontal line from a height of 5 m with a velocity of 20 m/s. What will be the time of flight of the ball?)
A 10±1989.8s
B 10-1989.8s
C 10+1989.8s
D 10±29.8s
5 m উচ্চতা হতে একটি বলকে 20 m/s বেগে অনুভূমিকের সাথে 30° কোণে উপরের দিকে নিক্ষেপ করা হলো। তাহলে বলটির বিচরণ কাল কত? (A ball is thrown upward with an angle of 30° with the horizontal line from a height of 5 m with a velocity of 20 m/s. What will be the time of flight of the ball?)
A 10±1899.8s
B 10-1989.8s
C 10+1989.8s
D 10±29.8s
A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is
A 0.25
B 0.33
C 0.40
D 0.50
A batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows to a stop because
A The batsman did not hit the ball hard enough
B Velocity is proportional to the force exerted on the ball
C There is a force on the ball opposing the motion
D There is no unbalanced force on the ball, so the ball would try to come to rest
If an object is thrown upwards, what will be its velocity, when it reaches its maximum height?
A 0 m\/s
B 4.9 m\/s
C 14.7 m\/s
D 20 m\/s
একটি স্প্রিংকে (স্প্রিং ধ্রুবক- 980 Nm-1) 10 cm সঙ্কুচিত করে এর সাহায্যে 200 g ভরের একটি বলকে লম্বভাবে উপরে ছোড়া হলো। বলটি উপরের দিকে কত উচ্চতায় উঠবে? (A 200 g ball is thrown vertically upward by compressing a spring (spring constant: 980 Nm-¹) by 10 cm. What will be the height reached by the ball?)
A 0.25 m
B 2.5 m
C 25.5 m
D 51 m
A ball and a bat costs 110 taka. The bat costs 100 taka more than the ball. How much does the ball cost ?
A 5
B 10
C 15
D 100
A box contains 21 balls numbered 1 to 21 . A ball numbered 1 to 21 . A ball is drawn and then another ball is brawn without replacement . What is the probability that both balls are even numbered?
A 2/7
B 3/14
C 8/21
D 5/21
A bag contains 7 red, 9 yellow and 3 black balls. If a ball is picked at random, what is the probability that the ball drawn will be either a red of a black ball.
A 7/19
B 9/19
C 10/19
D 11/19

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