a) b) d) e) Using Dimensional analysis, find the values of powers m and n in the proportionality, x x amin. [3 marks] A

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A B D E Using Dimensional Analysis Find The Values Of Powers M And N In The Proportionality X X Amin 3 Marks A 1 (126.17 KiB) Viewed 12 times

a) b) d) e) Using Dimensional analysis, find the values of powers m and n in the proportionality, x x amin. [3 marks] A student throws a set of keys vertically upward to her friend, who is in a window 4.00 m above. Her friend catches the keys 1.50 s later. With what initial velocity were the keys thrown? What was the velocity of the keys just before they were caught? i) ii) [2 marks] A projectile is fired in such a way that its horizontal range is equal to three times its maximum height. The expression for its maximum height reached is h v₁²sin²0 v²sin 201 and range is R = At what angle is the projectile fired? 2g [You may use the identity sin 20=2 sin 0 cos 0] g i) ii) [2 marks] [4 marks] A dog is running around the grass in your back yard. It undergoes successive displacements of 3.50 m south, 8.20 m northeast, and 15.0 m west. Using unit vector addition method, determine the magnitude of the dog's resultant displacement? [5 marks] A toy rocket engine is securely fastened to a large puck that can glide with negligible friction over a horizontal surface, taken as the xy plane. The 4.00-kg puck has a velocity of 3.00 i m/s at one instant. Eight seconds later, its velocity is 8.00 i+ 10.00 j m/s. Assuming the rocket engine exerts a constant horizontal force, find the components of the force and its magnitude. [3 marks] [1 mark]