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Étiquette : GRADE 11 PHYSICS
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Determining Maximum Horizontal Distance of a Projectile
Question: The ceiling of a long hall is 25 m high.What is the maximum horizontal distance that a ball thrown with a speed of 40 ms-1 can go without hitting the ceiling of the hall? Solution: Calculating the maximum horizontal distance Projectile motion image: Maximum height of the projectile: Maximum height of a projectile is…
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Finding Coefficient of Friction for Mass Sliding Down 60 degree Inclined Plane
Question: A block of mass m slides down the plane inclined at an angle 60o with an acceleration g/2 .Find the coefficient of kinetic friction. Solution: Finding the coefficient of friction As the block of mass m is moving on the inclined plane , the kinetic friction fk comes into play. The forces acting on…
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Train Retardation Calculation | Physics Problem Solution
Question: A train was moving at the rate of 54 Kmh-1 when brakes were applied. It came to rest within a distance of 225 m. Calculate the retardation produced in the train. Solution: Calculating the retardation Initial velocity(u): (Conversion from Kmh-1 to ms-1) $${54 \ \frac {km}{h}=54 \ (\frac{5}{18}) \ \frac{m}{s}}$$ $${u=15 \ \frac{m}{s}}$$ Final…
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Cricket Ball Speed and Angle: Will It Go for a Six?
Question: In the cricket game,a batsman strikes the ball such that it moves with a speed 30 ms-1 at an angle 30o with the horizontal. The boundary line of the cricket ground is located at a distance of 75 m from the batsman.Will the ball go for a six?(Neglect air resistance, take g=9.8 ms-2) Solution:…
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Projectile Motion Physics: Range Calculation and Moon Comparison
Question: Suppose an object is thrown with an initial speed of 10 ms-1 at an angle 450 with the horizontal,what is the range covered? Suppose the same object is thrown similarly in the moon, will there be any change in the range?If yes, what is the change? (Acceleration due to gravity in the moon gmoon…