【题目】A particle is projected from a point o, with an initial velocity of u m s-1, at an angle of ato the horizontal. In the vertical plane of projection, taking and y as the horizontal and vertical axes respectively Given that u=42 and that the particle passes through the point (...
【题目】A particle moves along the r-axis with velocityv(t)= e-2t metres per second.a Find the value of t for which the acceleration of the particleis -metres per second per second. Give your answerto3 significant figures. 相关知识点: ...
【题目】A particle moves along the r-axis with velocityv(t)=e^(-2t) metres per second.At time t = 0, the particle is 2 metres to the right of theorigin. Find:I the displacement function for the particle 相关知识点: 试题来源: ...
1. A particle P of mass 2 kg is moving with velocity (3i+ 4j)m s' when it receives an impulse. Immediately after the impulse is applied, P has velocity (2i-3j)m s-'.(a) Find the magnitude of the impulse.(5)(b)Find the angle between the direction of the impulse and the ...
A particle moves along the r-axis with velocityv(t)=e^(-2t) metres per second.At time t = 0, the paticle is 2 metres to the right of theorigin. Find:the position of the particle at time t = 1 second. 相关知识点: 试题来源: ...
A particle moves in a straight line with velocity function v(t)=2√t+3cms^(-1) , t≥0Find the value oflim_(h→0)(v(1+h)-v(1))/hInterpret this value. 相关知识点: 试题来源: 解析 1 cms-2 =v'(1) is the instantaneous accn. at t = 1 s ...
5 A particle P is projected with speed 30ms- at an angle of 60 above the horizontal from a point O on horizontal ground. For the instant when the speed of P is 17ms-' and increasing,(i) show that the vertical component of the velocity of P is 8 ms- downwards,(ii) calculate the...
A positively charged particle moving with a velocity \(V=\vec{Vx_{i}}+\vec{Vy_{j}}\) enters a region with a uniform magnetic field \(\vec{B}\) in the \(-z\) direction. Which of the following statements are true?I. The particle moves in the magnetic field without any change ...
A particle travels along a straight line with a velocity of v(t)=3e^((-t/2))sin (2t) meters per second. What is the total distance, in meters, traveled by the particle during the time interval 0≤q t≤q 2 seconds? ( ) A. 0.835 B. 1.850 C. 2.055 D. 2.261 E. 7.025 相关知...
A particle moves along the x-axis with its velocity at time t given by v(t)=bt^2-ct+8, where b and c are constants and b does not equal c. For which of the following values of t is the particle at constant velocity?( ) A. t= c(2b) B. t=2bc C. t= (2b)c D. t=2b...