Question 61 : Large angle produces?
1. straight trajectory
2. curve trajectory
3. high trajectory
4. flat trajectory
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Question 62 : Small angle produces?
1. straight trajectory
2. steep trajectory
3. high trajectory
4. flat trajectory
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Question 63 : "One radian is defined to be the angle subtended where the arc length "S" is exactly equal to the?"
1. radius of the circle.
2. circumference of the circle.
3. diameter of the circle.
4. half of radius of the circle.
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Question 64 : The motion on a curved path, when one component of velocity is constant and the other is variable is called?
1. Projectile motion
2. vibratory motion
3. circular motion
4. spin motion
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Question 65 : To attain maximum range, the projectile must be launched at an angle of?
1. 60°
2. 0°
3. 45°
4. 90°
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Question 66 : For one complete revolution θ =?
1. 360°
2. 45°
3. 90°
4. 180°
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Question 67 : The total flight requires a time that is?
1. twice the time necessary to reach the maximum height
2. thrice the time necessary to reach the maximum height
3. four times the time necessary to reach the maximum height.
4. equal to the time necessary to reach the maximum height.
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Question 68 : The range of the projectile depends on the square of the initial velocity and?
1. sine of twice the projection angle θ
2. cot of twice the projection angle θ
3. sine of thrice the projection angle θ
4. cosine of twice the project angle θ
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Question 69 : The angle between centripetal acceleration and tangential acceleration is?
1. 45°
2. 90°
3. 180°
4. 0°
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Question 70 : If a projectile is launched at 450 with velocity lOOm/s, it hit the target. It will have double the range if its velocity is:
1. 141.4 m/s
2. 400 m/s
3. 200 m/s
4. 173.2 m/s
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