Out of 500 car owners investigated, 400 owned car A and 200 owned car B, 50 owned both A and B cars. Is this data correct?

Two cars a and B starts motion with a velocity of 10 m//s and 20 m//s respectively. Car a moves with a constant acceleration of 2.5 m//s^(2) and car B have constant acceleration of 0.5 m//s^(2) as shown in figure. Find when car A will over take car B. Dimension of car is negligible as compare to distance. Find the time after which car A over takes car B.

Statement X:Decomposers satisfy their energy requirement directly from producers. Statement Y : The amount of available energy in an ecosystem depends on the rate of photosynthesis carried out by the producers. Which option is correct for statements X and Y? a. X and Y both correct b.X and Y both incorrect. c.X correct and Y incorrect. d.X incorrect and Y correct.

Car A of mass 1000 kg moves on a horizontal straight road with speed 36kmh^(-1) . If the force resisting the motion is 100 N, then find the power of the engine. Now, after covering 200 m distance, car A collides with a stationary car B of same mass and becomes stationary. As a result car B start moving on the horizontal road, then what would be the speed of car B just after the collision? (The engine of car B is off.)

Two cars A and B are moving in same direction with velocities 30 m/s and 20 m/s. When car A is at a distance d behind the car B, the driver of the car A applies brakes producing uniform retardation of 2m//s^(2) . There will be no collision when :-

Two car garages have a common gate which needs to open automatically when a car enters either of the garages or cars enter both. Devise a circuit that resembles this situation using diodes for this situation.

Two cars A and B start moving from the same point with same velocity v=5km/minute. Car A moves towards North and car B in moving towards East. What is the relative velocity of B with respect to A ?