Questionexactly 30s after a projectile is fired into the

Reference no: EM13350070

Question

Exactly 3.0s after a projectile is fired into the air from a flat ground, it is observed to have velocity v= (8.6i+4.8j) ms-1, where x is the horizontal and y axis is positive upward. Settle on-

(a) Horizontal angle of projectile.

(b) Its maximum height above the ground, and

Question2

An electron is a subatomic particle (m = 9.11 × 10-31 kg) that is subject to electric forces. An electron moving in +x direction accelerates from an initial velocity of +5.40 × 105 m/s to final velocity of +2.10 × 106 m/s as travelling a distance of 0.038 m. The electron's acceleration is due to two electric forces parallel to the x axis: and, which points in -x direction. Find out magnitudes?

Reference no: EM13350070

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