1. A ball increases speed on a ramp from rest to 8 m/s in in 3.5 s. What is the acceleration of the ball? A. 2.29 m/s2
B. 28 m/s2
C. -0.44 m/s2
D. - 2.29 m/s2

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i just did this and got a 100.

there are no correct statementd on the list of choices you provided.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards