A ball is thrown vertically upwards with an initial velocity of 20 m/s. Calculate the maximum height the ball reaches before falling back down.相关知识点: 试题来源: 解析 20.4 m 1. **已知条件**:初速度 \( v_0 = 20 \, \text{m/s} \),重力加速度 \( g = 9.8 \, \text{m/s}^2...
1 the velocity v of a particle is given by v=1-4x where x is position.if the initial velocity of the particle is 2m/s,find an equation for x in terms of t.没有说是匀加速运动 2the velocity v of a particle is given by v=1-4x where x is position.if the initial velocity of ...
u = Initial velocity a = Acceleration s = Displacement When an object is moving upwards, the force of gravity opposes its motion. In this case, a=−g=−9.8 m/s2 g is the acceleration due to gravity. When the object finally stops due to...
Velocity of the conductor is half of the initial velocity after a displaacement of the conductor d=√3J2L4B2l2m B Current flowing through the inductor at the instant when velocity of the conductor is half of the initial velocity is i=√3J24Lm C Velocity of the conductor is half of the...
Answer to: A ball is thrown upward with an initial velocity v_0. Assuming that the frictional force of air is f = -m a v, how fast is the ball when...
解析 4.5 secWORK SHOWN: 54t − 12t= = 0, 6t(9 − 2t) = 0, 6t = 0, t = 0 OR 9 − 2t = 0, t = 4.5 secWORK SHOWN: 54t − 12t= = 0, 6t(9 − 2t) = 0, 6t = 0, t = 0 OR 9 − 2t = 0, t = ...
A golf ball shown in Fig is hit from ground level with an initial velocity u=30\ ms^(-1) at an angle 60^(° ) to the horizontal.u=30\ m\ s^(-1)Calculatethe vertical component of the initial velocity u,Vertical component of the initial velocity = () ms^(-1)...
The ball is thrown upward with an initial velocity u=100m/s and will return to the same height after reaching its maximum height and coming back down. The time taken to reach the maximum height can be calculated using the formula:v=u−gtAt maximum height, the final velocity v=0. ...
init(damping: 1, initialVelocity: 0)), scale: .init(from: 0.6, to: 1, duration: 0.7), fade: .init(from: 0.8, to: 1, duration: 0.3)) The default value of entranceAnimation and exitAnimation is .translation - The entry translates in or out, respectively, with duration of 0.3 ...
on integration both sides we get velocity {eq}\frac {dx}{dt} = v {/eq} on integration once again we get the position Answer and Explanation: Initial velocity is {eq}u= i-j+3k {/eq} Acceleration {eq}a(t)= 6ti+12t^2j...