A small mass m slides with negligible friction down an incline at an angle of 25

Question

A small mass m slides with negligible friction down an incline at an angle of 25.76° with respect to the horizontal. It then drops down to a horizontal surface and bounces elastically back up as shown. The picture is to scale. It shows the position of the mass at equal time intervals starting from rest at X. The height of the mass at Q is the same as at R. The mechanical energy of m at V is _____that at Q. • The velocity of m at Q is _____that at R. • The speed change between U and P is _____between X and U. • The speed of m at R is _____that at S. • The size of the total force on m at T is ____at V. • The size of the total force on m at U is ____at Q. Answer choices Less than, Greater than, or Equal to

Explanation / Answer

mech energy - less

velocity -equal

speed u and p: - greater

speed r ands - greater

force u and Q - less

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