Momentum (p) is defined as the product of mass (m) and velocity (v), expressed as p = mv. To find the mass, we rearrange the formula to m = p / v. Substituting the given values: m = 50 kg·m/s / 5 m/s = 10 kg.

According to Newton's Second Law of Motion, force is defined as the rate of change of momentum. Mathematically, F = Δp / Δt. Given the change in momentum (Δp) is 10 kg·m/s and the time interval (Δt) is 0.02 seconds, the force is calculated as 10 / 0.02 = 500 N.

Impulse is defined as the change in momentum (J = Δp = FΔt). Since impulse is the product of force and time, and momentum is the product of mass and velocity, they share the same dimensions of [M L T^-1].

Whistling expels air, creating a small momentum change in the opposite direction, allowing movement on a frictionless surface. The law of conservation of momentum states that if the net external force is zero, the system's momentum is conserved. While both statements are physically correct, the act of whistling is a specific application of momentum conservation rather than the definition of the principle itself, making (R) a supporting fact rather than the direct causal explanation.

Linear momentum (p) is defined as the product of an object's mass (m) and its velocity (v). Using the formula p = m * v, we calculate p = 50 kg * 20 m/s = 1000 kg m/s. Therefore, the momentum is 1000 kg m/s.

Linear momentum (p) is defined as the product of an object's mass (m) and its velocity (v), expressed as p = mv. Given m = 80 kg and v = 60 m/s, the momentum p = 80 kg * 60 m/s = 4800 kg·m/s. In scientific notation, this is written as 4800 kg·m·s⁻¹ or 4800 kgms⁻¹.

Newton's Second Law states that the net external force acting on an object is directly proportional to the rate of change of its linear momentum. Mathematically, this is expressed as F = dp/dt. Since momentum is the product of mass and velocity, the rate of change of momentum represents the force required to accelerate or decelerate the object.

Collapsible bumpers act as crumple zones that increase the duration of the impact. According to the impulse-momentum theorem, increasing the time of impact reduces the average force exerted on the vehicle and its occupants, thereby significantly enhancing passenger safety during a crash.

According to Newton's second law of motion, the net force acting on an object is equal to the rate of change of its momentum with respect to time (F = dp/dt). While impulse is the change in momentum (FΔt = Δp), the instantaneous rate of change of momentum is specifically defined as the force applied to the system.

Linear momentum is defined as the product of an object's mass and its velocity. It is a vector quantity, meaning it has both magnitude and direction, and it describes the quantity of motion an object possesses.