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Showing posts with the label average speed sumsShow All
A truck starts from rest with a constant acceleration. During the 5th second it covers a distance of 10m. What is its acceleration?
Let us define some parameters, let, s- distance. a - acceleration. t - time u - init…
If a boy drops a ball from a window and the ball takes 3s to hit the ground, what is its velocity the second before it hits the ground? Take gravity as 10m/s^2 . (Neglect air resistance)
From given conditions we observe that, ball takes 3s to hit the ground, then one seco…
A monkey climbs a 60 m high pole. In the first minute, he climbs 6 m and slips down 3 m in the next minute. What time is required for it to reach the top?
From the given conditions we find that , In the first minute the monkey climbs 6 met…
The distance between two places A and B is 60 Km. Two cars at the same time start moving from two ends with the speed of 35 km/h and 25 km/h respectively. If both cars are moving towards each other, then after what time they will meet?
Since we know that the distance b etween A and B is 60 km also Speed of car A = 35 k…
A car is moving on a straight road covers one third of the total distance at 20km/h, and the rest at 60km/h. What is its average speed?
To solve such sums let us assume some quantities first . L et the total distance cove…
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A simple pendulum of length 100 cm performs S.H.M. Find the restoring force acting on its bob of mass 50 g when the displacement from the mean position is 3 cm.
The data that we can put forward from this question is , Length L= 100cm …