A 3-ton truck provides an acceleration of 3 ft/sec^2 to a 10-ton trailer. If the

Question

A 3-ton truck provides an acceleration of 3 ft/sec^2 to a 10-ton trailer. If the same truck exerts the same pull on a 15-ton trailer, what acceleration will result? (keep units as they are.)

A 3-ton truck provides an acceleration of 3 ft/sec^2 to a 10-ton trailer. If the same truck exerts the same pull on a 15-ton trailer, what acceleration will result? (keep units as they are.)

A 3-ton truck provides an acceleration of 3 ft/sec^2 to a 10-ton trailer. If the same truck exerts the same pull on a 15-ton trailer, what acceleration will result? (keep units as they are.)

Explanation / Answer

Solution: mass of truck = 3 tons.

   mass of frist trailer = 10 ton.

   mass of second trailer = 15 ton.

force applied by truck = mass*acceleration = (10+3)*3 = 39 ton-ft/sec2.

So, new acceleration = force/ new mass = 39/(15+3) = 2.1667ft/sec2.

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