269740 What are the speeds of two objects if, when they move uniformlytowardseach other, they get \(4 \mathrm{~m}\) closer in each second and when they move uniformly in the samedirection with the original speeds, they get \(4 \mathrm{~m}\) closer each \(10 \mathrm{~s}\) ?

269741 Two trainsareeach \(50 \mathrm{~m}\) long moving parallel towards each other at speeds \(10 \mathrm{~m} / \mathrm{s}\) and \(15 \mathrm{~m} / \mathrm{s}\) respectively, at what time will they pass each other?

269742 A ball is dropped from the top of a building\(100 \mathrm{~m}\) high. At the sameinstant another ball is thrown upwards with a velocity of \(40 \mathrm{~ms}^{-1}\) form the bottom of the building. The two balls will meet after.

269766 Two particles \(P\) and \(Q\) simultaneously start moving from point \(A\) with velocities \(15 \mathrm{~m} / \mathrm{s}\) and \(20 \mathrm{~m} / \mathrm{s}\) respectively. The two particles move with accelerationsequal in magnitude but opposite in direction. When P overtakes \(Q\) at \(B\) then its velocity is \(30 \mathrm{~m} / \mathrm{s}\). The velocity of \(Q\) at point \(B\) will be

269740 What are the speeds of two objects if, when they move uniformlytowardseach other, they get \(4 \mathrm{~m}\) closer in each second and when they move uniformly in the samedirection with the original speeds, they get \(4 \mathrm{~m}\) closer each \(10 \mathrm{~s}\) ?

269741 Two trainsareeach \(50 \mathrm{~m}\) long moving parallel towards each other at speeds \(10 \mathrm{~m} / \mathrm{s}\) and \(15 \mathrm{~m} / \mathrm{s}\) respectively, at what time will they pass each other?

269742 A ball is dropped from the top of a building\(100 \mathrm{~m}\) high. At the sameinstant another ball is thrown upwards with a velocity of \(40 \mathrm{~ms}^{-1}\) form the bottom of the building. The two balls will meet after.

269766 Two particles \(P\) and \(Q\) simultaneously start moving from point \(A\) with velocities \(15 \mathrm{~m} / \mathrm{s}\) and \(20 \mathrm{~m} / \mathrm{s}\) respectively. The two particles move with accelerationsequal in magnitude but opposite in direction. When P overtakes \(Q\) at \(B\) then its velocity is \(30 \mathrm{~m} / \mathrm{s}\). The velocity of \(Q\) at point \(B\) will be

269740 What are the speeds of two objects if, when they move uniformlytowardseach other, they get \(4 \mathrm{~m}\) closer in each second and when they move uniformly in the samedirection with the original speeds, they get \(4 \mathrm{~m}\) closer each \(10 \mathrm{~s}\) ?

269741 Two trainsareeach \(50 \mathrm{~m}\) long moving parallel towards each other at speeds \(10 \mathrm{~m} / \mathrm{s}\) and \(15 \mathrm{~m} / \mathrm{s}\) respectively, at what time will they pass each other?

269742 A ball is dropped from the top of a building\(100 \mathrm{~m}\) high. At the sameinstant another ball is thrown upwards with a velocity of \(40 \mathrm{~ms}^{-1}\) form the bottom of the building. The two balls will meet after.

269766 Two particles \(P\) and \(Q\) simultaneously start moving from point \(A\) with velocities \(15 \mathrm{~m} / \mathrm{s}\) and \(20 \mathrm{~m} / \mathrm{s}\) respectively. The two particles move with accelerationsequal in magnitude but opposite in direction. When P overtakes \(Q\) at \(B\) then its velocity is \(30 \mathrm{~m} / \mathrm{s}\). The velocity of \(Q\) at point \(B\) will be

269740 What are the speeds of two objects if, when they move uniformlytowardseach other, they get \(4 \mathrm{~m}\) closer in each second and when they move uniformly in the samedirection with the original speeds, they get \(4 \mathrm{~m}\) closer each \(10 \mathrm{~s}\) ?

269741 Two trainsareeach \(50 \mathrm{~m}\) long moving parallel towards each other at speeds \(10 \mathrm{~m} / \mathrm{s}\) and \(15 \mathrm{~m} / \mathrm{s}\) respectively, at what time will they pass each other?

269742 A ball is dropped from the top of a building\(100 \mathrm{~m}\) high. At the sameinstant another ball is thrown upwards with a velocity of \(40 \mathrm{~ms}^{-1}\) form the bottom of the building. The two balls will meet after.

269766 Two particles \(P\) and \(Q\) simultaneously start moving from point \(A\) with velocities \(15 \mathrm{~m} / \mathrm{s}\) and \(20 \mathrm{~m} / \mathrm{s}\) respectively. The two particles move with accelerationsequal in magnitude but opposite in direction. When P overtakes \(Q\) at \(B\) then its velocity is \(30 \mathrm{~m} / \mathrm{s}\). The velocity of \(Q\) at point \(B\) will be