Question

1)A object is released from rest from a height of 1.8 m and moves down the incline as shown. What is the angular speed of the object when it reaches the horizontal surface? (ignore the rotational kinetic energy, friction force, drag force).The mass of the object is 50.0 kg. a)5.9 m/s b)3.3 m/s c) 2.5 m/s d)1.8 m/s

2) a 5.0 kg bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 seconds. What is its final kinetic energy (joules) at the end of 11 second? a)14 b)48 c)65 d)39 e)9

3)A object is released from rest from a height of 1.8 m and moves down the incline as shown. What is the angular speed of the object when it reaches the horizontal surface? (ignore the rotational kinetic energy, friction force, drag force). The mass of the object is 50.0 kg. A)5.9 m/s B)4.8 m/s C)3.3 m/s D)2.5 m/s E)1.8 m/s

4)Which of the following formula will yield an energy unit, joule? M = mass, v = velocity, a = acceleration, r = radius, t = time. A)H = mv^2/r B)H = ma/r^2 C)H = F•t D)H = mv/ E)H = mr^2/t

Answer 1