The cat has two directions of motions: The horizontal motion = Dx = 2.2 m The vertical motion = Dy = -1.3 m (negative sign indicates that the cat is falling) a = 9.8 m/sec^2 Vy = zero (since you are not moving up)
From the laws of motion: <span>Dy = Vyt + 0.5ayt^2 </span>-1.3 = 0(t) + 0.5(-9.8)t^2 <span>t = 0.52s </span> Then, again using the laws of motion (but for the horizontal direction this time) Dx = Vxt <span>2.2 = Vx0.52 </span> <span>Vx = 2.2/0.52 </span> <span>= 4.23 m/s </span> <span>Therefore the cat's speed when it slid off the table is 4.23 m/s horizontally.</span>
it is a vector as it has a magnitude and a direction. If it was a scalar quantity it would just have a magnitude and would be 45 m. Acceleration is an example of a vector quantity
