【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 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 ...
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 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...
. At the same time a second particle starts from the point (6+8) m and moves with constant velocity (--3) ms-1 Show that the particles collide, and find the time at which they do so. 相关知识点: 试题来源: 解析 After t s the first particle is at 2t+(4-t) and the second is...
The velocity v of a particle moving along a straight line is given by the function v(t) = 3t^2 - 6t + 2, where t is the time in seconds. What is the displacement of the particle from t = 1 to t = 3 seconds? A. 10 units B. 12 units C. 14 units D. 16 units 相关知识...
A particle is launched from a point on a horizontal plane with initial velocity Um s-' at an angleof elevation o. The particle moves freely under gravity until it strikes the plane.The greatest height of the particle is h m.Showthath=(U^2sin^2α)/(2g). 相关知识点: 试题来源: ...