![]() The resistance of a body to its own acceleration is quantified by its inertia. Which of the following is a scalar quantity? Linear momentum, inertia, and forceĪns. So, mathematically, it is as follows: Weight of the box, W = m(g - a) = m(g - g) = 0. As a result, the weight of the box experienced by the thief during the jump will be zero. During that time, he/she and the box will both be weightless. During the jump, the thief is in free fall. What is the weight of the box as felt by the thief during the jump?Īns. A thief jumps from a house's roof while carrying a box weighing W on his head. According to Newton's third law of motion, "when one body exerts a force on another body, the first body undergoes a force similar in magnitude in the opposite direction of the force exercised." As an outcome, the swimmer will push the water backward with his hands in order to swim forward. Why does a swimmer push backwards in the water?Īns. Read More: Motion in a Straight Line Long Answer Questions (3 Marks Questions) When a fast-moving bus stops suddenly, the bottom half of the body in touch with the seat comes to a complete halt, whereas the upper section of the body prefers to retain its uniform motion. Give a reason why passengers are thrown forward from their seats when a speeding bus stops suddenly.Īns. If he throws his shirt or anything else he owns in the opposite direction of travel, or if he spits in the forward direction, he can get to the shore. ![]() A man lies still in the middle of a pond on absolutely sleek ice. If a 10kg weight is applied to both ends, the tension will be 10kg, and the reading will be 10kg. Weight is gauged by spring balancing, which is dependent on the tension in the spring. A force of 10kg wt is applied to each end of the spring balance. (b) So because the kite is confined and stationary, the algebraic total of forces operating on it is zero, according to Newton’s first law of motion. The net force exerted on the raindrop will be 0 since the force acting upon an object is given by. (a) The raindrop’s acceleration would be zero because it is falling at a constant pace.
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